{"id":48962,"date":"2026-01-28T17:34:16","date_gmt":"2026-01-28T16:34:16","guid":{"rendered":"https:\/\/www.mylav.net\/?p=48962"},"modified":"2026-01-28T17:34:16","modified_gmt":"2026-01-28T16:34:16","slug":"recherche-de-sang-occulte-dans-les-selles-chez-le-chien-desormais-disponible-un-test-immunologique-ultra-specifique-comparable-a-celui-utilise-en-medecine-humaine","status":"publish","type":"post","link":"https:\/\/www.mylav.net\/fr\/digestif\/recherche-de-sang-occulte-dans-les-selles-chez-le-chien-desormais-disponible-un-test-immunologique-ultra-specifique-comparable-a-celui-utilise-en-medecine-humaine\/","title":{"rendered":"Recherche de sang occulte dans les selles chez le chien : d\u00e9sormais disponible un test immunologique ultra-sp\u00e9cifique, comparable \u00e0 celui utilis\u00e9 en m\u00e9decine humaine"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">La recherche de sang occulte dans les selles est un test largement utilis\u00e9 en m\u00e9decine humaine. Elle constitue un outil important pour la d\u00e9tection de pertes sanguines digestives subcliniques, parfois difficiles \u00e0 mettre en \u00e9vidence lors de l\u2019examen clinique.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En m\u00e9decine v\u00e9t\u00e9rinaire, l\u2019utilisation de ce type de test est rest\u00e9e longtemps limit\u00e9e en raison du manque de sp\u00e9cificit\u00e9 des m\u00e9thodes chimiques historiquement disponibles. Ces tests permettaient de d\u00e9tecter le groupement h\u00e8me pr\u00e9sent dans l\u2019h\u00e9moglobine ou la myoglobine, sans distinction d\u2019origine, entra\u00eenant de fr\u00e9quentes r\u00e9actions crois\u00e9es, notamment avec les prot\u00e9ines d\u2019origine alimentaire.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Depuis peu, un <\/span><b>test immunologique sp\u00e9cifiquement d\u00e9velopp\u00e9 pour l\u2019esp\u00e8ce canine<\/b><span style=\"font-weight: 400;\"> est d\u00e9sormais disponible. Ce test permet de d\u00e9tecter <\/span><b>exclusivement l\u2019h\u00e9moglobine du chien<\/b><span style=\"font-weight: 400;\">, gr\u00e2ce \u00e0 l\u2019utilisation d\u2019anticorps monoclonaux hautement sp\u00e9cifiques.<\/span><\/p>\n<p><b>Un int\u00e9r\u00eat diagnostique cibl\u00e9 en gastro-ent\u00e9rologie canine<\/b><\/p>\n<p><span style=\"font-weight: 400;\">L\u2019apport de ce test est particuli\u00e8rement pertinent dans le cadre de l\u2019exploration de chiens pr\u00e9sentant une suspicion d\u2019h\u00e9morragie gastro-ent\u00e9rique occulte.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Il est notamment indiqu\u00e9 chez les chiens atteints d\u2019<\/span><b>an\u00e9mie ferriprive<\/b><span style=\"font-weight: 400;\">, g\u00e9n\u00e9ralement microcytaire et hypochrome, la perte chronique de sang au niveau intestinal repr\u00e9sentant l\u2019une des principales causes de carence en fer dans cette esp\u00e8ce.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">De mani\u00e8re plus g\u00e9n\u00e9rale, la recherche de sang occulte f\u00e9cal peut \u00eatre int\u00e9gr\u00e9e au bilan diagnostique lorsque le contexte clinique \u00e9voque une h\u00e9morragie digestive non manifeste, en particulier lors de :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">diarrh\u00e9es chroniques,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">amaigrissement inexpliqu\u00e9,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">syndromes de malabsorption,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">troubles digestifs persistants.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ces situations peuvent \u00eatre associ\u00e9es \u00e0 diverses affections, telles que des maladies infectieuses (bact\u00e9riennes, virales ou parasitaires), des l\u00e9sions traumatiques, des ulc\u00e9rations ou des processus n\u00e9oplasiques, y compris en l\u2019absence de modification visible de l\u2019aspect des selles.<\/span><\/p>\n<figure id=\"attachment_48963\" aria-describedby=\"caption-attachment-48963\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-48963 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2026\/01\/sang_occulte-768x513.jpg\" alt=\"\" width=\"768\" height=\"513\" \/><figcaption id=\"caption-attachment-48963\" class=\"wp-caption-text\">Figure 1 : An\u00e9mie ferriprive chez un chien. Les h\u00e9maties apparaissent peu color\u00e9s et de petite taille (hypochromie et microcytose), traduisant une diminution du contenu en h\u00e9moglobine li\u00e9e \u00e0 une carence en fer.<\/figcaption><\/figure>\n<p><strong>Avantages analytiques du test immunologique canin<\/strong><\/p>\n<p>Le test actuellement disponible repose sur une m\u00e9thode immunochromatographique sp\u00e9cifiquement con\u00e7ue pour reconna\u00eetre l\u2019h\u00e9moglobine canine. Cette sp\u00e9cificit\u00e9 permet d\u2019\u00e9viter toute r\u00e9action crois\u00e9e avec l\u2019h\u00e9moglobine ou la myoglobine d\u2019origine alimentaire (viande crue ou cuite) ou exog\u00e8ne.<\/p>\n<p>De ce fait, <strong>aucune restriction alimentaire pr\u00e9alable n\u2019est n\u00e9cessaire<\/strong>, ce qui simplifie consid\u00e9rablement la mise en \u0153uvre du test en pratique quotidienne et am\u00e9liore la fiabilit\u00e9 des r\u00e9sultats.<\/p>\n<p>Le seuil de d\u00e9tection est d\u2019environ <strong>12 \u00b5g d\u2019h\u00e9moglobine par gramme de selles<\/strong>, assurant une sensibilit\u00e9 suffisante, y compris en cas de pertes sanguines faibles ou intermittentes.<\/p>\n<p>L\u2019introduction de ce test permet ainsi une approche diagnostique <strong>plus sp\u00e9cifique, plus fiable et plus pr\u00e9coce<\/strong> des h\u00e9morragies digestives occultes chez le chien, en d\u00e9passant les limites des m\u00e9thodes chimiques non sp\u00e9cifiques utilis\u00e9es jusqu\u2019\u00e0 pr\u00e9sent.<\/p>\n<p><strong>Conditions de pr\u00e9l\u00e8vement et limites d\u2019interpr\u00e9tation<\/strong><\/p>\n<p>Le mat\u00e9riau requis pour l\u2019analyse est constitu\u00e9 de <strong>selles fra\u00eeches de chien<\/strong>, id\u00e9alement recueillies imm\u00e9diatement apr\u00e8s l\u2019\u00e9mission spontan\u00e9e, ou \u00e0 d\u00e9faut lors d\u2019une exploration rectale. Le pr\u00e9l\u00e8vement doit \u00eatre analys\u00e9 dans les 24 heures suivant la collecte. Si ce d\u00e9lai ne peut \u00eatre respect\u00e9, une conservation au r\u00e9frig\u00e9rateur (entre 2 et 8 \u00b0C) est recommand\u00e9e afin de pr\u00e9server l\u2019int\u00e9grit\u00e9 de l\u2019h\u00e9moglobine \u00e9ventuellement pr\u00e9sente.<\/p>\n<p>Il est important de rappeler que les pertes de sang digestives occultes peuvent \u00eatre <strong>intermittentes<\/strong>. Ainsi, un r\u00e9sultat n\u00e9gatif isol\u00e9 ne permet pas d\u2019exclure formellement une h\u00e9morragie intestinale.<\/p>\n<p>En cas de suspicion clinique forte, il est conseill\u00e9 de r\u00e9aliser la recherche sur <strong>plusieurs pr\u00e9l\u00e8vements<\/strong> recueillis sur des jours diff\u00e9rents (id\u00e9alement trois pr\u00e9l\u00e8vements cons\u00e9cutifs), afin d\u2019augmenter la sensibilit\u00e9 globale de l\u2019investigation.<\/p>\n<p><strong>Disponibilit\u00e9 de l\u2019analyse<\/strong><\/p>\n<p>La recherche de sang occulte f\u00e9cal immunologique chez le chien est disponible via <strong>VetPortal MYLAV<\/strong>.<\/p>\n<p><strong>Pierpaolo Romanelli<\/strong>, DMV, EBVS\u00ae European Specialist in Veterinary Clinical Pathology (Dipl. ECVCP) ; Sp\u00e9cialiste en Pathologie Clinique MYLAV<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000; font-family: Arial, sans-serif;\">Picture:\u00a0<\/span><a href=\"https:\/\/fr.freepik.com\/app\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/fr.freepik.com\/app&amp;source=gmail&amp;ust=1769694763261000&amp;usg=AOvVaw1cjHmAczL39EiCV7VWyfm6\">https:\/\/fr.freepik.<wbr \/>com\/app<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La recherche de sang occulte dans les selles est un test largement utilis\u00e9 en m\u00e9decine [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":48972,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1154],"tags":[],"class_list":["post-48962","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-digestif"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Recherche de sang occulte dans les selles chez le chien : d\u00e9sormais disponible un test immunologique ultra-sp\u00e9cifique, comparable \u00e0 celui utilis\u00e9 en m\u00e9decine humaine - MyLav<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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