{"id":24336,"date":"2026-02-28T22:53:50","date_gmt":"2026-03-01T02:53:50","guid":{"rendered":"https:\/\/cliniqueomicron.ca\/anti-tpo-microsome-thyroidien\/"},"modified":"2026-09-17T22:19:31","modified_gmt":"2026-09-18T02:19:31","slug":"anti-tpo-microsome-thyroidien","status":"publish","type":"page","link":"https:\/\/cliniqueomicron.ca\/en\/anti-tpo-microsome-thyroidien\/","title":{"rendered":"Anti-TPO (Anticorps Anti-Thyroperoxydase) \u2013 Thyro\u00efdite Auto-Immune | Clinique Omicron"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"24336\" class=\"elementor elementor-24336\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-afdf456 e-flex e-con-boxed e-con e-parent\" data-id=\"afdf456\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6bca53b elementor-widget elementor-widget-html\" data-id=\"6bca53b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Cinzel:wght@600&family=Poppins:wght@400;500;600;700&display=swap');\n\n.co-wrap * {\n  font-family: 'Poppins', sans-serif;\n  box-sizing: border-box;\n}\n\n.co-wrap {\n  max-width: 1100px;\n  margin: 0 auto;\n  padding: 30px 0 60px;\n  margin-top: 10px;\n}\n\n.co-label {\n  font-family: 'Cinzel', serif;\n  font-size: 14px;\n  font-weight: bold;\n  letter-spacing: 1px;\n  text-transform: uppercase;\n  color: #4D6577;\n  margin-bottom: 14px;\n  display: block;\n}\n\n.co-wrap h1 {\n  font-size: 32px;\n  font-weight: 500;\n  color: #323C52;\n  margin: 0 0 22px;\n  line-height: 1.2;\n  letter-spacing: 0.5px;\n}\n\n.co-intro {\n  font-size: 16px;\n  font-weight: 400;\n  line-height: 1.75;\n  color: #4D6577;\n  margin-bottom: 36px;\n  padding-bottom: 32px;\n  border-bottom: 1px solid rgba(77,101,119,.2);\n}\n\n.co-wrap h2 {\n  font-size: 20px;\n  font-weight: 600;\n  color: #323C52;\n  margin: 32px 0 12px;\n  letter-spacing: 0.3px;\n}\n\n.co-wrap p {\n  font-size: 15px;\n  font-weight: 400;\n  color: #4D6577;\n  line-height: 1.7;\n  margin-bottom: 14px;\n}\n\n.co-list {\n  list-style: none;\n  padding: 0;\n  margin: 12px 0 24px;\n}\n.co-list li {\n  font-size: 15px;\n  font-weight: 400;\n  color: #4D6577;\n  padding: 10px 14px 10px 38px;\n  margin-bottom: 8px;\n  border-radius: 6px;\n  position: relative;\n  background: rgba(77,101,119,.06);\n  border-left: 3px solid #4D6577;\n}\n.co-list li::before {\n  content: \"\u2713\";\n  position: absolute;\n  left: 12px;\n  font-weight: 700;\n  color: #4D6577;\n}\n\n.co-table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 14px 0 22px;\n  font-size: 14px;\n  border-radius: 8px;\n  overflow: hidden;\n}\n.co-table thead tr {\n  background: #323C52;\n  color: #fff;\n}\n.co-table thead th {\n  padding: 11px 16px;\n  text-align: left;\n  font-weight: 600;\n  font-size: 13px;\n}\n.co-table tbody tr:nth-child(even) { background: rgba(77,101,119,.06); }\n.co-table tbody tr:nth-child(odd) { background: #fff; }\n.co-table td {\n  padding: 10px 16px;\n  color: #4D6577;\n  border-bottom: 1px solid rgba(77,101,119,.12);\n  font-size: 14px;\n}\n.co-table td:first-child {\n  font-weight: 600;\n  color: #323C52;\n}\n\n.co-infobox {\n  display: flex;\n  gap: 12px;\n  background: rgba(77,101,119,.06);\n  border-radius: 8px;\n  border-left: 4px solid #4D6577;\n  padding: 14px 18px;\n  margin: 18px 0 28px;\n  font-size: 14px;\n  font-weight: 400;\n  color: #4D6577;\n  line-height: 1.65;\n}\n.co-infobox .ico { font-size: 18px; flex-shrink: 0; }\n<\/style>\n\n<div class=\"co-wrap\">\n\n  <span class=\"co-label\">Laboratory test<\/span>\n  <h1>Anti-TPO \u2013 Anticorps Anti-Thyroperoxydase (Microsome Thyro\u00efdien)<\/h1>\n<style>.oc-fiche-cta{margin:8px 0 34px;padding:22px 24px;border:1.5px solid rgba(50,60,82,.15);border-left:4px solid #FF611C;border-radius:12px;background:#F4F6F8;font-family:Poppins,sans-serif}.oc-fiche-cta-t{font-size:18px;font-weight:600;color:#323C52;margin:0 0 4px;line-height:1.35}.oc-fiche-cta-x{font-size:15px;color:#4D6577;margin:0 0 14px;line-height:1.55}.oc-fiche-cta-b{display:flex;flex-wrap:wrap;gap:10px}.oc-fiche-cta-b a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border-radius:8px;font-size:14px;font-weight:600;text-decoration:none;box-sizing:border-box}.oc-fiche-cta-b .oc-p{background:#FF611C;color:#fff}.oc-fiche-cta-b .oc-p:hover{background:#E04E0C}.oc-fiche-cta-b .oc-s{background:#fff;color:#323C52;border:1.5px solid rgba(50,60,82,.25)}@media (max-width:600px){.co-wrap h1{font-size:24px;line-height:1.25;text-transform:none}.oc-fiche-cta{padding:18px 16px}.oc-fiche-cta-b a{flex:1 1 100%}body .co-wrap > .co-table,body .co-wrap > .co-table tbody,body .co-wrap > .co-table tr,body .co-wrap > .co-table td{display:block;width:100%;box-sizing:border-box}body .co-wrap > .co-table{min-width:0;table-layout:auto}body .co-wrap > .co-table thead{display:none}body .co-wrap > .co-table tr{margin:0 0 10px;border:1px solid rgba(77,101,119,.18);border-radius:8px;overflow:hidden}body .co-wrap > .co-table td{padding:9px 12px;border:0}body .co-wrap > .co-table td:first-child{font-weight:600;color:#323C52;background:rgba(77,101,119,.07)}#ocw{transform:scale(.8);transform-origin:bottom right}}<\/style><div class=\"oc-fiche-cta\" data-oc-cta=\"fiche-haut-lab\"><p class=\"oc-fiche-cta-t\">Faire cette analyse<\/p><p class=\"oc-fiche-cta-x\">Pr\u00e9l\u00e8vements sanguins dans nos points de service au Qu\u00e9bec. Un professionnel peut aussi interpr\u00e9ter vos r\u00e9sultats avec vous.<\/p><div class=\"oc-fiche-cta-b\"><a class=\"oc-p\" href=\"https:\/\/cliniqueomicron.ca\/prelevements-medicaux\/\">Blood sampling<\/a><a class=\"oc-s\" href=\"https:\/\/cliniqueomicron.ca\/rendez-vous\/\">Make an appointment<\/a><a class=\"oc-s\" href=\"tel:+15146063350\">514 606-3350<\/a><\/div><\/div>\n\n\n  <div class=\"co-intro\">\n    Les anticorps anti-TPO, anciennement d\u00e9sign\u00e9s anticorps anti-microsomes thyro\u00efdiens, sont des auto-anticorps dirig\u00e9s contre la thyroperoxydase, une enzyme cl\u00e9 de la synth\u00e8se des hormones thyro\u00efdiennes. Leur pr\u00e9sence dans le sang est le marqueur s\u00e9rologique le plus sensible d'une auto-immunit\u00e9 dirig\u00e9e contre la glande thyro\u00efde. Ils sont principalement associ\u00e9s \u00e0 la thyro\u00efdite de Hashimoto \u2014 cause la plus fr\u00e9quente d'hypothyro\u00efdie en Occident \u2014 ainsi qu'\u00e0 la maladie de Basedow. Ce test est prescrit dans le bilan des dysfonctions thyro\u00efdiennes, du suivi des maladies auto-immunes et de l'\u00e9valuation du risque thyro\u00efdien dans certaines populations particuli\u00e8res.\n  <\/div>\n\n  <h2>Quel est le r\u00f4le de la thyroperoxydase ?<\/h2>\n  <p>La thyroperoxydase est une enzyme produite par les cellules folliculaires de la thyro\u00efde. Elle joue un r\u00f4le central dans la synth\u00e8se des hormones thyro\u00efdiennes T3 et T4 en catalysant l'oxydation de l'iodure et l'incorporation de l'iode dans la thyroglobuline. Lorsque le syst\u00e8me immunitaire produit des anticorps contre cette enzyme, la capacit\u00e9 de la thyro\u00efde \u00e0 fabriquer ses hormones peut \u00eatre progressivement compromise, conduisant \u00e0 une inflammation chronique et \u00e0 une atrophie glandulaire.<\/p>\n\n  <h2>When is this test prescribed?<\/h2>\n  <ul class=\"co-list\">\n    <li>Bilan \u00e9tiologique d'une hypothyro\u00efdie confirm\u00e9e par une TSH \u00e9lev\u00e9e<\/li>\n    <li>Bilan \u00e9tiologique d'une hyperthyro\u00efdie, en compl\u00e9ment des anticorps anti-r\u00e9cepteurs de la TSH (TRAK)<\/li>\n    <li>TSH anormale chez une personne asymptomatique, pour orienter le diagnostic<\/li>\n    <li>Goitre diffus sans nodule dominant, \u00e0 la recherche d'une origine auto-immune<\/li>\n    <li>Bilan auto-immun \u00e9largi en pr\u00e9sence d'une autre maladie auto-immune (diab\u00e8te de type 1, maladie c\u0153liaque, polyarthrite rhumato\u00efde, lupus)<\/li>\n    <li>Suivi de grossesse : d\u00e9pistage du risque de thyro\u00efdite du post-partum ou d'hypothyro\u00efdie gestationnelle<\/li>\n    <li>Avant instauration d'un traitement \u00e0 risque thyro\u00efdien (amiodarone, lithium, interf\u00e9ron, immunoth\u00e9rapie anti-canc\u00e9reuse)<\/li>\n  <\/ul>\n\n  <h2>How to interpret the result?<\/h2>\n\n  <table class=\"co-table\">\n    <thead>\n      <tr>\n        <th>Results<\/th>\n        <th>Signification clinique probable<\/th>\n        <th>Usual conduct<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Negative<\/td>\n        <td>Absence d'auto-immunit\u00e9 thyro\u00efdienne d\u00e9tect\u00e9e par ce marqueur<\/td>\n        <td>Recherche d'autres causes si dysfonction thyro\u00efdienne pr\u00e9sente<\/td>\n      <\/tr>\n      <tr>\n        <td>Slightly positive<\/td>\n        <td>Peut s'observer dans la population g\u00e9n\u00e9rale sans maladie clinique associ\u00e9e<\/td>\n        <td>Corr\u00e9lation avec la TSH et suivi clinique selon le contexte<\/td>\n      <\/tr>\n      <tr>\n        <td>Mod\u00e9r\u00e9ment \u00e0 franchement positif<\/td>\n        <td>Fortement \u00e9vocateur d'une thyro\u00efdite auto-immune (Hashimoto ou Basedow)<\/td>\n        <td>Bilan fonctionnel complet, \u00e9chographie thyro\u00efdienne si indiqu\u00e9e, suivi m\u00e9dical<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n\n  <h2>Maladies thyro\u00efdiennes auto-immunes associ\u00e9es<\/h2>\n\n  <table class=\"co-table\">\n    <thead>\n      <tr>\n        <th>Illness<\/th>\n        <th>Fonction thyro\u00efdienne<\/th>\n        <th>Profil anticorps typique<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Hashimoto's thyroiditis<\/td>\n        <td>Hypothyro\u00efdie (progressive)<\/td>\n        <td>Anti-TPO \u00e9lev\u00e9s, anti-thyroglobuline souvent positifs<\/td>\n      <\/tr>\n      <tr>\n        <td>Maladie de Basedow<\/td>\n        <td>Hyperthyroidism<\/td>\n        <td>Anti-TPO positifs, TRAK (anti-r\u00e9cepteurs TSH) positifs<\/td>\n      <\/tr>\n      <tr>\n        <td>Postpartum thyroiditis<\/td>\n        <td>Phase hyper puis hypo transitoire<\/td>\n        <td>Anti-TPO positifs en p\u00e9riode pr\u00e9natale = facteur de risque<\/td>\n      <\/tr>\n      <tr>\n        <td>Thyro\u00efdite silencieuse<\/td>\n        <td>Phase transitoire, r\u00e9solution spontan\u00e9e<\/td>\n        <td>Anti-TPO souvent positifs \u00e0 titre mod\u00e9r\u00e9<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n\n  <div class=\"co-infobox\">\n    <span class=\"ico\">\u2139\ufe0f<\/span>\n    <span>Un taux d'anti-TPO \u00e9lev\u00e9 chez une personne avec une TSH encore normale ne signifie pas qu'une maladie thyro\u00efdienne est pr\u00e9sente, mais indique un risque accru de d\u00e9velopper une dysfonction thyro\u00efdienne dans le futur. Un suivi r\u00e9gulier de la TSH est alors g\u00e9n\u00e9ralement recommand\u00e9.<\/span>\n  <\/div>\n\n  <h2>Anti-TPO et grossesse<\/h2>\n  <p>La grossesse repr\u00e9sente un contexte particulier pour l'interpr\u00e9tation des anti-TPO. La pr\u00e9sence de ces anticorps en d\u00e9but de grossesse est associ\u00e9e \u00e0 un risque accru de fausse couche pr\u00e9coce, d'hypothyro\u00efdie gestationnelle, de thyro\u00efdite du post-partum et de d\u00e9pression post-natale. C'est pourquoi certaines recommandations cliniques pr\u00e9conisent un d\u00e9pistage syst\u00e9matique des anti-TPO chez les femmes enceintes \u00e0 risque ou pr\u00e9sentant une TSH limite. La prise en charge est d\u00e9termin\u00e9e par le m\u00e9decin au cas par cas.<\/p>\n\n  <h2>Peut-on avoir des anti-TPO positifs sans \u00eatre malade ?<\/h2>\n  <p>Oui. Entre 10 et 15 % de la population g\u00e9n\u00e9rale pr\u00e9sente des anticorps anti-TPO d\u00e9tectables sans aucune dysfonction thyro\u00efdienne document\u00e9e. Cette pr\u00e9valence augmente avec l'\u00e2ge et est plus \u00e9lev\u00e9e chez les femmes. Dans ce contexte, on parle d'auto-immunit\u00e9 thyro\u00efdienne infraclinique. Ces personnes ne n\u00e9cessitent pas de traitement imm\u00e9diat mais b\u00e9n\u00e9ficient d'un suivi biologique r\u00e9gulier, notamment de la TSH, pour d\u00e9tecter une \u00e9ventuelle \u00e9volution vers une dysfonction clinique.<\/p>\n\n  <h2>What other tests are often combined?<\/h2>\n  <ul class=\"co-list\">\n    <li>TSH (thyr\u00e9ostimuline) : premier marqueur de la fonction thyro\u00efdienne, indispensable \u00e0 l'interpr\u00e9tation des anti-TPO<\/li>\n    <li>T4 libre (FT4) : \u00e9value la quantit\u00e9 d'hormone thyro\u00efdienne active circulante<\/li>\n    <li>Anticorps anti-thyroglobuline (anti-Tg) : second marqueur d'auto-immunit\u00e9 thyro\u00efdienne, compl\u00e9mentaire aux anti-TPO<\/li>\n    <li>Anticorps anti-r\u00e9cepteurs de la TSH (TRAK) : sp\u00e9cifiques de la maladie de Basedow<\/li>\n    <li>\u00c9chographie thyro\u00efdienne : \u00e9valuation morphologique de la glande, aspect hypo\u00e9chog\u00e8ne \u00e9vocateur de thyro\u00efdite<\/li>\n  <\/ul>\n\n  <h2>Consult at Clinique Omicron<\/h2>\n  <p>Les professionnels de Clinique Omicron, dans ses points de service au Qu\u00e9bec, peuvent prescrire et interpr\u00e9ter le dosage des anti-TPO dans le cadre d'un bilan thyro\u00efdien complet. Que vous pr\u00e9sentiez des sympt\u00f4mes \u00e9vocateurs d'une dysfonction thyro\u00efdienne, un r\u00e9sultat de TSH anormal ou un contexte auto-immun particulier, une consultation m\u00e9dicale permettra d'\u00e9tablir un plan de suivi adapt\u00e9 \u00e0 votre situation.<\/p>\n\n  <style>.co-disclaimer{font-size:13px;color:#8a9aaa;font-style:italic;border-top:1px solid rgba(77,101,119,.15);padding-top:24px;margin-top:40px;line-height:1.6;}<\/style>\n  <p class=\"co-disclaimer\">The content of this page is provided for informational purposes only and is not intended to replace the advice of a qualified healthcare professional. Consult a physician for any symptoms, questions or decisions you may have regarding your health.<\/p>\n\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Test de laboratoire Anti-TPO \u2013 Anticorps Anti-Thyroperoxydase (Microsome Thyro\u00efdien) Les anticorps anti-TPO, anciennement d\u00e9sign\u00e9s anticorps anti-microsomes thyro\u00efdiens, sont des auto-anticorps dirig\u00e9s contre la thyroperoxydase, une enzyme cl\u00e9 de la synth\u00e8se des hormones thyro\u00efdiennes. Leur pr\u00e9sence dans le sang est le marqueur s\u00e9rologique le plus sensible d&#8217;une auto-immunit\u00e9 dirig\u00e9e contre la glande thyro\u00efde. Ils sont principalement&hellip;&nbsp;<a href=\"https:\/\/cliniqueomicron.ca\/en\/anti-tpo-microsome-thyroidien\/\" rel=\"bookmark\">Read More \"<span class=\"screen-reader-text\">Anti-TPO (Anticorps Anti-Thyroperoxydase) \u2013 Thyro\u00efdite Auto-Immune | Clinique Omicron<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":100,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_themeisle_gutenberg_block_has_review":false,"_metasync_otto_title":"Anti-TPO (Thyro\u00efdite Auto-immune) | Brossard | Clinique Omicron","_metasync_otto_description":"Les anticorps anti-TPO sont des marqueurs d'auto-immunit\u00e9 thyro\u00efdienne associ\u00e9s \u00e0 la thyro\u00efdite de Hashimoto et \u00e0 la maladie de Basedow. Comprenez ce r\u00e9sulta...","_metasync_otto_keywords":"anti tpo microsome thyroidien, Clinique Omicron, clinique m\u00e9dicale Qu\u00e9bec, m\u00e9decin g\u00e9n\u00e9raliste Montr\u00e9al, Qu\u00e9bec","_metasync_otto_og_title":"Anti-TPO (Anticorps | Brossard | Clinique Omicron","_metasync_otto_og_description":"Les anticorps anti-TPO sont des marqueurs d'auto-immunit\u00e9 thyro\u00efdienne associ\u00e9s \u00e0 la thyro\u00efdite de Hashimoto et \u00e0 la maladie de Basedow. Comprenez ce r\u00e9sulta...","_metasync_otto_twitter_title":"Anti-TPO (Anticorps | Clinique Omicron","_metasync_otto_twitter_description":"","rank_math_title":"","rank_math_description":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_aioseo_title":"Anti-TPO (Anticorps Anti-Thyroperoxydase) \u2013 Thyro\u00efdite Auto-Immune | Clinique Omicron","_aioseo_description":"Les anticorps anti-TPO sont des marqueurs d'auto-immunit\u00e9 thyro\u00efdienne associ\u00e9s \u00e0 la thyro\u00efdite de Hashimoto et \u00e0 la maladie de Basedow. Comprenez ce r\u00e9sultat avec Clinique Omicron, dans ses points de service au Qu\u00e9bec.","_metasync_seo_title":"Anti-TPO (Thyro\u00efdite Auto-immune) | Clinique Omicron","_metasync_seo_desc":"Les anticorps anti-TPO signalent une auto-immunit\u00e9 thyro\u00efdienne, li\u00e9e \u00e0 la thyro\u00efdite de Hashimoto ou \u00e0 la maladie de Basedow. 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