{"id":17931,"date":"2026-10-22T09:00:00","date_gmt":"2026-10-22T09:00:00","guid":{"rendered":"https:\/\/hf-concepts.de\/?p=17931"},"modified":"2026-10-17T11:29:11","modified_gmt":"2026-10-17T11:29:11","slug":"fras-5-measurement-procedure","status":"publish","type":"post","link":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/","title":{"rendered":"FRAS 5 in the practice: measurement procedure and limits of interpretation"},"content":{"rendered":"\n<article class=\"wp-block-group hfb hfb-content is-layout-flow wp-block-group-is-layout-flow\">\n<section class=\"wp-block-group hfb-answer is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Short answer<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FRAS 5 is a compact redox analysis device that measures both sides of oxidative balance: oxidative stress with the d-ROMs test and antioxidant capacity with the PAT test. The measurement uses a small capillary blood sample from the fingertip, with an integrated centrifuge and guided operation, in a few minutes. For operators, a fixed procedure, qualified staff for sampling and professional interpretation are what count. Single values are not a diagnosis.<\/p>\n<\/section>\n\n\n\n<section class=\"wp-block-group hfb-facts is-layout-flow wp-block-group-is-layout-flow\">\n<h2 id=\"auf-einen-blick\" class=\"wp-block-heading hfb-facts-title\">At a glance<\/h2>\n\n\n\n<div class=\"wp-block-group hfb-facts-list is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"hfb-facts-label wp-block-paragraph\">Measures<\/p>\n\n\n\n<p class=\"hfb-facts-value wp-block-paragraph\">oxidative stress (d-ROMs) and antioxidant capacity (PAT)<\/p>\n\n\n\n<p class=\"hfb-facts-label wp-block-paragraph\">Sample<\/p>\n\n\n\n<p class=\"hfb-facts-value wp-block-paragraph\">small capillary blood sample from the fingertip<\/p>\n\n\n\n<p class=\"hfb-facts-label wp-block-paragraph\">Device<\/p>\n\n\n\n<p class=\"hfb-facts-value wp-block-paragraph\">integrated centrifuge, guided operation<\/p>\n\n\n\n<p class=\"hfb-facts-label wp-block-paragraph\">Measuring time<\/p>\n\n\n\n<p class=\"hfb-facts-value wp-block-paragraph\">d-ROMs around 2.5 minutes, PAT about 1 minute<\/p>\n\n\n\n<p class=\"hfb-facts-label wp-block-paragraph\">Limit<\/p>\n\n\n\n<p class=\"hfb-facts-value wp-block-paragraph\">no diagnosis from single values<\/p>\n\n\n\n<p class=\"hfb-facts-label wp-block-paragraph\">Strongest facility type<\/p>\n\n\n\n<p class=\"hfb-facts-value wp-block-paragraph\">Longevity centre<\/p>\n<\/div>\n<\/section>\n\n\n\n<h2 id=\"what-fras-5-measures-both-sides-of-the-redox-balance\" class=\"wp-block-heading\">What FRAS 5 measures: both sides of the redox balance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FRAS 5 makes redox status visible within minutes. Anyone bringing a redox analysis device into their facility needs above all a clear measurement procedure and an honest interpretation of the values.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FRAS 5 is a compact analysis system for oxidative balance. It does not measure just one side but the relationship between oxidative stress and antioxidant capacity. Two tests are available for this.<\/p>\n\n\n\n<figure class=\"wp-block-table hfb-table\"><table><thead><tr><th scope=\"col\">Test<\/th><th scope=\"col\">What it captures<\/th><th scope=\"col\">Unit and context<\/th><\/tr><\/thead><tbody><tr><td>d-ROMs<\/td><td>reactive oxygen metabolites as markers of oxidative stress<\/td><td>reported in U.Carr<\/td><\/tr><tr><td>PAT<\/td><td>antioxidant capacity in plasma<\/td><td>view of antioxidant reserves<\/td><\/tr><tr><td>OSI index<\/td><td>ratio of both values<\/td><td>makes interpretation easier for professionals<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The measurement uses a small capillary blood sample from the fingertip. The device has an integrated centrifuge, evaluates photometrically and guides the user step by step via the display.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full hfb-figure\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1920\" height=\"1442\" src=\"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Free-Radical-Analysis.jpg\" alt=\"Close-up of the FRAS 5 labelled Free Radical Analytical System\" class=\"wp-image-15561\" srcset=\"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Free-Radical-Analysis.jpg 1920w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Free-Radical-Analysis-300x225.jpg 300w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Free-Radical-Analysis-1024x769.jpg 1024w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Free-Radical-Analysis-768x577.jpg 768w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Free-Radical-Analysis-1536x1154.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Compact and guided: integrated centrifuge and photometric evaluation.<\/figcaption><\/figure>\n\n\n\n<h2 id=\"the-measurement-procedure-step-by-step\" class=\"wp-block-heading\">The measurement procedure step by step<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An FRAS 5 measurement is quick, but it is a small laboratory process. A fixed procedure ensures comparable values and a professional impression.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Preparation:<\/strong> appointment, instructions, materials ready<\/li>\n\n\n\n<li><strong>Sample:<\/strong> small blood sample from the fingertip<\/li>\n\n\n\n<li><strong>Analysis:<\/strong> centrifuge and photometric measurement<\/li>\n\n\n\n<li><strong>Consultation:<\/strong> interpret values, plan follow-up<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Pure measuring time is short: the d-ROMs test takes around two and a half minutes, the PAT test about one minute. For the appointment, preparation, sampling and consultation come on top. So plan a consultation slot, not just device time.<\/p>\n\n\n\n<div class=\"wp-block-group hfb-note is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Important: capillary blood sampling belongs in qualified hands and within a legally permitted framework. Clarify beforehand who takes the sample in your facility and who interprets the values.<\/p>\n<\/div>\n\n\n\n<h2 id=\"consumables-hygiene-and-documentation\" class=\"wp-block-heading\">Consumables, hygiene and documentation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Besides the device, every measurement needs consumables and a clean workstation. These points should be settled before the first client appointment:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Test materials:<\/strong> reagents and accessories for d-ROMs and PAT, stored as specified.<\/li>\n\n\n\n<li><strong>Sampling:<\/strong> lancets, disinfection, gloves and safe disposal.<\/li>\n\n\n\n<li><strong>Workstation:<\/strong> fixed table, socket, storage, good lighting.<\/li>\n\n\n\n<li><strong>Documentation:<\/strong> values, date, time and conditions, stored in compliance with data protection.<\/li>\n\n\n\n<li><strong>Cost per measurement:<\/strong> factor consumables into the price.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full hfb-figure\"><img decoding=\"async\" width=\"1500\" height=\"1176\" src=\"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/fras5-no-sfondo.png\" alt=\"FRAS 5 analyser with measuring chamber, display and sample holder, cut out\" class=\"wp-image-15841\" srcset=\"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/fras5-no-sfondo.png 1500w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/fras5-no-sfondo-300x235.png 300w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/fras5-no-sfondo-1024x803.png 1024w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/fras5-no-sfondo-768x602.png 768w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><figcaption class=\"wp-element-caption\">Fixed workstation: device, test materials and sample holder within reach.<\/figcaption><\/figure>\n\n\n\n<h2 id=\"limits-of-interpretation-what-the-values-do-not-say\" class=\"wp-block-heading\">Limits of interpretation: what the values do not say<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Redox values create a concrete reason for a conversation. But they are neither a diagnosis nor proof that a programme or application works. Single values depend on many factors, such as training, diet, sleep or acute stress.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>No diagnosis from single values:<\/strong> an elevated value is a hint, not a finding.<\/li>\n\n\n\n<li><strong>Trend instead of snapshot:<\/strong> FRAS 5 becomes meaningful through repeated measurements under comparable conditions.<\/li>\n\n\n\n<li><strong>Professional interpretation:<\/strong> medical statements belong with qualified professionals.<\/li>\n\n\n\n<li><strong>No longevity proof:<\/strong> better values do not prove a longer or healthier life.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Combined with other measurements, a fuller picture emerges. How to organise comparable measurement procedures is shown in our article on <a href=\"https:\/\/hf-concepts.de\/en\/hrv-measurement-protocol\/\">HRV measurement<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full hfb-figure\"><img decoding=\"async\" width=\"1920\" height=\"1280\" src=\"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Oskar-Beratung.jpg\" alt=\"Consultant sitting at a desk during a consultation\" class=\"wp-image-15844\" srcset=\"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Oskar-Beratung.jpg 1920w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Oskar-Beratung-300x200.jpg 300w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Oskar-Beratung-1024x683.jpg 1024w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Oskar-Beratung-768x512.jpg 768w, https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Oskar-Beratung-1536x1024.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Values are a reason to talk, not a diagnosis: interpretation belongs in the consultation.<\/figcaption><\/figure>\n\n\n\n<h2 id=\"which-facility-fras-5-suits\" class=\"wp-block-heading\">Which facility FRAS 5 suits<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Longevity centre:<\/strong> as a measurement component at programme start and at fixed intervals, combined with consultation.<\/li>\n\n\n\n<li><strong>Practice:<\/strong> as an addition to check-ups, with professional interpretation by qualified staff.<\/li>\n\n\n\n<li><strong>Sport and performance:<\/strong> to accompany training and recovery phases, if staff are available for sampling and consultation.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Further measurement methods are part of our <a href=\"https:\/\/hf-concepts.de\/en\/point-of-health-diagnostics\/\">point-of-health diagnostics<\/a>. All device details are on the <a href=\"https:\/\/hf-concepts.de\/en\/fras-5-redox-analysis\/\">FRAS 5 redox analysis<\/a> page.<\/p>\n\n\n\n<h2 id=\"hf-concepts-check\" class=\"wp-block-heading\">HF Concepts Check: how we rate FRAS 5 by facility type<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In the HF Concepts Check, we score nine criteria from 1 to 5, always for a specific facility type. The same technology can score strongly in one facility type and only moderately in another. That is exactly the point.<\/p>\n\n\n    <section class=\"hfb-check\" data-hfb-check aria-label=\"HF Concepts Check\">\n        <div class=\"hfb-check-head\">\n            <div>\n                <div class=\"hfb-check-title\">HF Concepts Check<\/div>\n                <div class=\"hfb-check-tabs\" role=\"tablist\" aria-label=\"Facility type\">\n                                            <button class=\"hfb-check-tab\" type=\"button\" role=\"tab\"\n                            id=\"hfb-check-1tab-0\"\n                            aria-controls=\"hfb-check-1panel-0\"\n                            aria-selected=\"true\"\n                            tabindex=\"0\">Longevity centre<\/button>\n                                            <button class=\"hfb-check-tab\" type=\"button\" role=\"tab\"\n                            id=\"hfb-check-1tab-1\"\n                            aria-controls=\"hfb-check-1panel-1\"\n                            aria-selected=\"false\"\n                            tabindex=\"-1\">Practice<\/button>\n                                            <button class=\"hfb-check-tab\" type=\"button\" role=\"tab\"\n                            id=\"hfb-check-1tab-2\"\n                            aria-controls=\"hfb-check-1panel-2\"\n                            aria-selected=\"false\"\n                            tabindex=\"-1\">Sport &amp; performance<\/button>\n                                    <\/div>\n            <\/div>\n            <div class=\"hfb-check-total\" aria-live=\"polite\">\n                <strong class=\"hfb-check-score\" data-hfb-total>35<\/strong>\n                <span>out of 45 points<\/span>\n            <\/div>\n        <\/div>\n                    <div class=\"hfb-check-panel\" id=\"hfb-check-1panel-0\"\n                role=\"tabpanel\" aria-labelledby=\"hfb-check-1tab-0\"\n                data-hfb-total=\"35\">\n                <div class=\"hfb-check-grid\">\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Client benefit: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">1<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Client benefit<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Plausibility &amp; regulation: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">2<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Plausibility &amp; regulation<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Target group fit: 5 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:100%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">5<\/span>\n                            <span class=\"hfb-check-label\">Target group fit<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Investment: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Investment<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Marketability: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">5<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Marketability<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Integration: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">6<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Integration<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Time &amp; staff: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">7<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Time &amp; staff<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Earnings: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">8<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Earnings<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Differentiation: 5 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">9<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:100%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">5<\/span>\n                            <span class=\"hfb-check-label\">Differentiation<\/span>\n                        <\/div>\n                                    <\/div>\n                <ol class=\"hfb-check-legend\" aria-hidden=\"true\">\n                    <li>Client benefit<\/li><li>Plausibility &amp; regulation<\/li><li>Target group fit<\/li><li>Investment<\/li><li>Marketability<\/li><li>Integration<\/li><li>Time &amp; staff<\/li><li>Earnings<\/li><li>Differentiation<\/li>                <\/ol>\n            <\/div>\n                    <div class=\"hfb-check-panel\" id=\"hfb-check-1panel-1\"\n                role=\"tabpanel\" aria-labelledby=\"hfb-check-1tab-1\"\n                data-hfb-total=\"34\">\n                <div class=\"hfb-check-grid\">\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Client benefit: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">1<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Client benefit<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Plausibility &amp; regulation: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">2<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Plausibility &amp; regulation<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Target group fit: 5 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:100%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">5<\/span>\n                            <span class=\"hfb-check-label\">Target group fit<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Investment: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Investment<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Marketability: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">5<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Marketability<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Integration: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">6<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Integration<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Time &amp; staff: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">7<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Time &amp; staff<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Earnings: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">8<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Earnings<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Differentiation: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">9<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Differentiation<\/span>\n                        <\/div>\n                                    <\/div>\n                <ol class=\"hfb-check-legend\" aria-hidden=\"true\">\n                    <li>Client benefit<\/li><li>Plausibility &amp; regulation<\/li><li>Target group fit<\/li><li>Investment<\/li><li>Marketability<\/li><li>Integration<\/li><li>Time &amp; staff<\/li><li>Earnings<\/li><li>Differentiation<\/li>                <\/ol>\n            <\/div>\n                    <div class=\"hfb-check-panel\" id=\"hfb-check-1panel-2\"\n                role=\"tabpanel\" aria-labelledby=\"hfb-check-1tab-2\"\n                data-hfb-total=\"28\">\n                <div class=\"hfb-check-grid\">\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Client benefit: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">1<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Client benefit<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Plausibility &amp; regulation: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">2<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Plausibility &amp; regulation<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Target group fit: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Target group fit<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Investment: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Investment<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Marketability: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">5<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Marketability<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Integration: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">6<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Integration<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Time &amp; staff: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">7<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Time &amp; staff<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Earnings: 3 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">8<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:60%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">3<\/span>\n                            <span class=\"hfb-check-label\">Earnings<\/span>\n                        <\/div>\n                                            <div class=\"hfb-check-item\" role=\"group\" aria-label=\"Differentiation: 4 \/ 5\">\n                            <span class=\"hfb-check-number\" aria-hidden=\"true\">9<\/span>\n                            <span class=\"hfb-check-bar\" aria-hidden=\"true\"><span class=\"hfb-check-bar-fill\" style=\"height:80%\"><\/span><\/span>\n                            <span class=\"hfb-check-value\" aria-hidden=\"true\">4<\/span>\n                            <span class=\"hfb-check-label\">Differentiation<\/span>\n                        <\/div>\n                                    <\/div>\n                <ol class=\"hfb-check-legend\" aria-hidden=\"true\">\n                    <li>Client benefit<\/li><li>Plausibility &amp; regulation<\/li><li>Target group fit<\/li><li>Investment<\/li><li>Marketability<\/li><li>Integration<\/li><li>Time &amp; staff<\/li><li>Earnings<\/li><li>Differentiation<\/li>                <\/ol>\n            <\/div>\n                <p class=\"hfb-check-note\">Our assessment after reviewing the technology, based on typical facilities of each type. No guarantee for any individual case.<\/p>    <\/section>\n    \n\n\n<p class=\"wp-block-paragraph\"><strong>Longevity centre:<\/strong> 35\/45; <strong>Practice:<\/strong> 34\/45; <strong>Sport &amp; performance:<\/strong> 28\/45.<\/p>\n\n\n\n<h2 id=\"kommunikation\" class=\"wp-block-heading\">How to communicate FRAS 5 in line with HWG<\/h2>\n\n\n\n<figure class=\"wp-block-table hfb-table\"><table><thead><tr><th scope=\"col\">Safe to communicate<\/th><th scope=\"col\">Avoid<\/th><\/tr><\/thead><tbody><tr><td>Make redox status measurable<\/td><td>\u201cdiagnosis\u201d or \u201cfinding\u201d from single values<\/td><\/tr><tr><td>Quick measurement with a clear procedure<\/td><td>\u201cproves the application works\u201d<\/td><\/tr><tr><td>Trend over several appointments<\/td><td>\u201cmeasures your biological age\u201d<\/td><\/tr><tr><td>Concrete basis for consultation<\/td><td>\u201cextends life\u201d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A suitability check before the first session belongs in every professional workflow. If there are health questions, the application should be cleared with a physician beforehand.<\/p>\n\n\n\n<section id=\"faq\" class=\"wp-block-group hfb-faq is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Frequently asked questions<\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What is FRAS 5?<\/summary>\n<p class=\"wp-block-paragraph\">A compact analysis system for oxidative balance. It measures oxidative stress with the d-ROMs test and antioxidant capacity with the PAT test.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>How does a measurement work?<\/summary>\n<p class=\"wp-block-paragraph\">A small capillary blood sample from the fingertip is centrifuged and measured photometrically. The device guides the user step by step.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>How long does the analysis take?<\/summary>\n<p class=\"wp-block-paragraph\">The d-ROMs test takes around two and a half minutes, the PAT test about one minute. Preparation, sampling and consultation add to the appointment.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Who may take the blood sample?<\/summary>\n<p class=\"wp-block-paragraph\">Sampling belongs in qualified hands and within a legally permitted framework. Clarify this for your facility before starting.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Can FRAS 5 be used to make a diagnosis?<\/summary>\n<p class=\"wp-block-paragraph\">No. Single values are hints, not findings. The measurement becomes meaningful over time and with professional interpretation.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What is the OSI index?<\/summary>\n<p class=\"wp-block-paragraph\">An index that relates the d-ROMs and PAT values and makes interpretation easier for professionals.<\/p>\n<\/details>\n<\/section>\n\n\n\n<section class=\"wp-block-group hfb-related is-layout-flow wp-block-group-is-layout-flow\">\n<h2 id=\"weiterlesen\" class=\"wp-block-heading\">Further reading<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/hf-concepts.de\/en\/hrv-measurement-protocol\/\">HRV measurement protocol<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/hf-concepts.de\/en\/3d-body-scan-vs-bia\/\">3D body scan vs. BIA<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/hf-concepts.de\/en\/fras-5-redox-analysis\/\">View the FRAS 5 redox analysis<\/a><\/li>\n<\/ul>\n<\/section>\n\n\n\n<p class=\"hfb-disc wp-block-paragraph\">Transparency: HF Concepts sells some of the technologies discussed here. That&#8217;s why we assess against clear criteria and advise against a purchase when the fit is missing.<br>Note: All information is general, non-medical information. The applications discussed are wellness and recovery applications and do not replace medical advice.<\/p>\n\n\n\n<aside class=\"wp-block-group hfb-cta is-layout-flow wp-block-group-is-layout-flow\">\n<h2 id=\"ersteinschaetzung\" class=\"wp-block-heading hfb-cta-title\">Does redox diagnostics fit your concept?<\/h2>\n\n\n\n<p class=\"hfb-cta-text wp-block-paragraph\">In 30 minutes we clarify procedure, staff and revenue model. If the fit isn&#8217;t there, we&#8217;ll tell you.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button hfb-cta-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/calendly.com\/30min_beratung\/mit-hf-concepts-technologie-integrieren\">Book an assessment<\/a><\/div>\n<\/div>\n<\/aside>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>d-ROMs, PAT, a fingertip blood sample: how an FRAS 5 measurement works, and what the values do not tell you.<\/p>\n","protected":false},"author":2,"featured_media":15537,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"page_builder":"","_genesis_title":"","_genesis_description":"","footnotes":""},"categories":[1,77],"tags":[86,74,75],"class_list":["post-17931","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-technology-checks","tag-longevity-center-2","tag-practice","tag-studio"],"meta_all":{"copied_media_ids":[],"referenced_media_ids":[]},"meta_all_flat":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>FRAS 5: Measurement Procedure and Limits | HF Concepts<\/title>\n<meta name=\"description\" content=\"FRAS 5 redox analysis device: d-ROMs, PAT, sampling procedure, materials and limits of interpretation. 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For practices, centres and sport.","twitter_image":"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Fras5-Redoxanalyse.jpg","twitter_misc":{"Written by":"Oskar Filenius","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["Article","BlogPosting"],"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/#article","isPartOf":{"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/"},"author":{"name":"Oskar Filenius","@id":"https:\/\/hf-concepts.de\/en\/#\/schema\/person\/7f3f85ae98550e3b4d6d67e88f76fb22"},"headline":"FRAS 5 in the practice: measurement procedure and limits of interpretation","datePublished":"2026-10-22T09:00:00+00:00","mainEntityOfPage":{"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/"},"wordCount":1039,"publisher":{"@id":"https:\/\/hf-concepts.de\/en\/#organization"},"image":{"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/#primaryimage"},"thumbnailUrl":"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Fras5-Redoxanalyse.jpg","keywords":["Longevity-Center","Practice","Studio"],"articleSection":["Blog","Technology Checks"],"inLanguage":"en-US"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/","url":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/","name":"FRAS 5: Measurement Procedure and Limits | HF Concepts","isPartOf":{"@id":"https:\/\/hf-concepts.de\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/#primaryimage"},"image":{"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/#primaryimage"},"thumbnailUrl":"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Fras5-Redoxanalyse.jpg","datePublished":"2026-10-22T09:00:00+00:00","description":"FRAS 5 redox analysis device: d-ROMs, PAT, sampling procedure, materials and limits of interpretation. For practices, centres and sport.","breadcrumb":{"@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/"]}],"mainEntity":[{"@type":"Question","name":"What is FRAS 5?","acceptedAnswer":{"@type":"Answer","text":"A compact analysis system for oxidative balance. It measures oxidative stress with the d-ROMs test and antioxidant capacity with the PAT test."}},{"@type":"Question","name":"How does a measurement work?","acceptedAnswer":{"@type":"Answer","text":"A small capillary blood sample from the fingertip is centrifuged and measured photometrically. The device guides the user step by step."}},{"@type":"Question","name":"How long does the analysis take?","acceptedAnswer":{"@type":"Answer","text":"The d-ROMs test takes around two and a half minutes, the PAT test about one minute. Preparation, sampling and consultation add to the appointment."}},{"@type":"Question","name":"Who may take the blood sample?","acceptedAnswer":{"@type":"Answer","text":"Sampling belongs in qualified hands and within a legally permitted framework. Clarify this for your facility before starting."}},{"@type":"Question","name":"Can FRAS 5 be used to make a diagnosis?","acceptedAnswer":{"@type":"Answer","text":"No. Single values are hints, not findings. The measurement becomes meaningful over time and with professional interpretation."}},{"@type":"Question","name":"What is the OSI index?","acceptedAnswer":{"@type":"Answer","text":"An index that relates the d-ROMs and PAT values and makes interpretation easier for professionals."}}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/#primaryimage","url":"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Fras5-Redoxanalyse.jpg","contentUrl":"https:\/\/hf-concepts.de\/wp-content\/uploads\/2026\/05\/Fras5-Redoxanalyse.jpg","width":1920,"height":1920,"caption":"The FRAS 5 system for performing redox analysis is set up on a workbench."},{"@type":"BreadcrumbList","@id":"https:\/\/hf-concepts.de\/en\/fras-5-measurement-procedure\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Startseite","item":"https:\/\/hf-concepts.de\/en\/experts-biohacking-longevity\/"},{"@type":"ListItem","position":2,"name":"FRAS 5 in the practice: measurement procedure and limits of interpretation"}]},{"@type":"WebSite","@id":"https:\/\/hf-concepts.de\/en\/#website","url":"https:\/\/hf-concepts.de\/en\/","name":"HF Concepts","description":"Experten f\u00fcr Biohacking &amp; Longevity Technologien","publisher":{"@id":"https:\/\/hf-concepts.de\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/hf-concepts.de\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/hf-concepts.de\/en\/#organization","name":"HF-Concepts","url":"https:\/\/hf-concepts.de\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/hf-concepts.de\/en\/#\/schema\/logo\/image\/","url":"https:\/\/hf-concepts.de\/wp-content\/uploads\/2021\/05\/HF-Concepts-LOGO-96.png","contentUrl":"https:\/\/hf-concepts.de\/wp-content\/uploads\/2021\/05\/HF-Concepts-LOGO-96.png","width":491,"height":96,"caption":"HF-Concepts"},"image":{"@id":"https:\/\/hf-concepts.de\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/hfconceptsgermany\/","https:\/\/www.instagram.com\/hf_concepts\/","https:\/\/www.linkedin.com\/company\/hf-concepts\/"]},{"@type":"Person","@id":"https:\/\/hf-concepts.de\/en\/#\/schema\/person\/7f3f85ae98550e3b4d6d67e88f76fb22","name":"Oskar Filenius","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/afe678cb81e09861886cf8fc561eda7d5f52832fe6de51d22be42952cdfab425?s=96&d=blank&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/afe678cb81e09861886cf8fc561eda7d5f52832fe6de51d22be42952cdfab425?s=96&d=blank&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/afe678cb81e09861886cf8fc561eda7d5f52832fe6de51d22be42952cdfab425?s=96&d=blank&r=g","caption":"Oskar Filenius"},"description":"Gr\u00fcnder HF-Concepts"}]}},"_links":{"self":[{"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/posts\/17931","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/comments?post=17931"}],"version-history":[{"count":4,"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/posts\/17931\/revisions"}],"predecessor-version":[{"id":18032,"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/posts\/17931\/revisions\/18032"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/media\/15537"}],"wp:attachment":[{"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/media?parent=17931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/categories?post=17931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hf-concepts.de\/en\/wp-json\/wp\/v2\/tags?post=17931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}