{"id":8407,"date":"2026-10-22T16:37:21","date_gmt":"2026-10-22T13:37:21","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/ensayo-inmunoenzimatico\/"},"modified":"2026-10-22T16:37:22","modified_gmt":"2026-10-22T13:37:22","slug":"ensayo-inmunoenzimatico","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/es\/glosario\/ensayo-inmunoenzimatico\/","title":{"rendered":"Ensayo inmunoenzim\u00e1tico"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">El ensayo inmunoenzim\u00e1tico, ELISA (del lat. <em>immunitas<\/em>, liberaci\u00f3n, exenci\u00f3n de algo, y <em>fermentum<\/em>, fermento) es un m\u00e9todo b\u00e1sico de diagn\u00f3stico serol\u00f3gico de laboratorio basado en la reacci\u00f3n espec\u00edfica de uni\u00f3n entre un ant\u00edgeno y un anticuerpo.<\/p>\n\n<p class=\"wp-block-paragraph\">A diferencia de la PCR, que detecta el material gen\u00e9tico del virus, ELISA se utiliza con mayor frecuencia para detectar la huella inmunitaria (anticuerpos) que el virus ha dejado en el organismo del paciente.<\/p>\n\n<h2 id=\"h-&#x44D;&#x442;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;-&#x438;-&#x43F;&#x430;&#x442;&#x43E;&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\" class=\"wp-block-heading\">Etiolog\u00eda y fisiopatolog\u00eda<\/h2>\n\n<p class=\"wp-block-paragraph\">El m\u00e9todo se basa en el principio de reconocimiento molecular \u00abllave-cerradura\u00bb. El proceso diagn\u00f3stico consta de las siguientes etapas:<\/p>\n\n<ol class=\"wp-block-list\">\n<li>el fabricante deposita previamente ant\u00edgenos purificados del virus de inter\u00e9s (por ejemplo, el virus del sarampi\u00f3n) en el fondo de los pocillos de una placa de pl\u00e1stico especial;<\/li>\n\n\n\n<li>se a\u00f1ade suero sangu\u00edneo del paciente (si la persona tiene o ha tenido sarampi\u00f3n, su sangre contiene anticuerpos que se unen firmemente a los ant\u00edgenos del fondo del pocillo);<\/li>\n\n\n\n<li>para visualizar este proceso, se a\u00f1aden al pocillo anticuerpos secundarios a los que se ha unido qu\u00edmicamente una enzima; estos se unen al complejo ya formado;<\/li>\n\n\n\n<li>en la \u00faltima etapa se a\u00f1ade el sustrato revelador.<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\">La enzima descompone el sustrato, modificando la coloraci\u00f3n del l\u00edquido del pocillo. Cuanto m\u00e1s intensa sea la coloraci\u00f3n (densidad \u00f3ptica), mayor ser\u00e1 la concentraci\u00f3n (t\u00edtulo) de anticuerpos en la sangre del paciente.<\/p>\n\n<h2 id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\" class=\"wp-block-heading\">Importancia cl\u00ednica<\/h2>\n\n<p class=\"wp-block-paragraph\">ELISA es la principal herramienta para determinar la etapa del proceso infeccioso. Permite al m\u00e9dico no solo confirmar el contacto del paciente con la infecci\u00f3n, sino tambi\u00e9n diferenciar los anticuerpos por clases (IgM, IgG, IgA), as\u00ed como determinar su avidez (fuerza de uni\u00f3n).<\/p>\n\n<p class=\"wp-block-paragraph\">Mediante ELISA se realizan:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>cribado de la sangre donada<\/strong> para detectar el VIH, las hepatitis y la s\u00edfilis;<\/li>\n\n\n\n<li><strong>pruebas en mujeres embarazadas (complejo TORCH)<\/strong> para evaluar el riesgo de infecci\u00f3n intrauterina del feto.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Si ELISA arroja un resultado positivo para anticuerpos contra una infecci\u00f3n nueva, el diagn\u00f3stico suele requerir confirmaci\u00f3n mediante m\u00e9todos m\u00e1s complejos (por ejemplo, inmunotransferencia o PCR).<\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>El ensayo inmunoenzim\u00e1tico, ELISA (del lat. <em>immunitas<\/em>, liberaci\u00f3n, exenci\u00f3n de algo, y <em>fermentum<\/em>, fermento) es un m\u00e9todo b\u00e1sico de diagn\u00f3stico serol\u00f3gico de laboratorio basado en la reacci\u00f3n espec\u00edfica de uni\u00f3n entre un ant\u00edgeno y un anticuerpo. <\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-8407","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ensayo inmunoenzim\u00e1tico: definici\u00f3n m\u00e9dica y descripci\u00f3n | Voka Wiki<\/title>\n<meta name=\"description\" content=\"El ensayo inmunoenzim\u00e1tico, ELISA (del lat. immunitas, liberaci\u00f3n, exenci\u00f3n de algo, y fermentum, fermento) es un m\u00e9todo b\u00e1sico de diagn\u00f3stico serol\u00f3gico de laboratorio basado en la reacci\u00f3n espec\u00edfica de 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