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Comparación de dos metodologías para confirmación de VIH en Banco de Sangre

Comparison of two methodologies for HIV confirmation in a Blood Bank
Authors: Sánchez-Díaz, Gabriela; Castillo-Mercado, Isabel; Martínez-Mendoza, María Elena; Damián-González, René Samuel; Martínez-Leyva, Gabriel;

Comparación de dos metodologías para confirmación de VIH en Banco de Sangre

Abstract

Resumen Introducción: existen diferentes métodos confirmatorios aprobados por la Norma Oficial Mexicana NOM-253-SSA1-2012 para detectar la infección por VIH-1 o VIH-2, como son: inmunoelectrotransferencia (Western Blot), inmunofluorescencia e inmunoensayo recombinante, entre otros. Objetivo: comparar la concordancia de las plataformas de inmunoensayo recombinante (GeniusTM) frente a Western Blot (WB) para el análisis confirmatorio de muestras reactivas al VIH en donadores en el Banco de Sangre. Material y métodos: se analizaron muestras que presentaron reactividad repetidamente para VIH durante el tamizaje por quimioluminiscencia. Se aplicaron pruebas confirmatorias por Inmunoelectrotransferencia (Western Blot) e inmunoensayo recombinante (GeniusTM). Se realizó un estudio doble ciego usando 39 muestras reactivas y 41 no reactivas por serología a VIH. Se sometieron los resultados a concordancia diagnóstica Resultados: al analizar con WB las 39 muestras con resultado reactivo dieron un resultado positivo y de las 41 muestras con resultado no reactivo se encontró que 35 reportaron resultados negativos y 6, indeterminadas. Al analizar con GeniusTM las 39 muestras con resultado reactivo dieron positivo y las 41 muestras no reactivas dieron resultados negativos. El índice Kappa obtenido fue de 0.85. Conclusiones: se encontró que hay una alta concordancia entre los dos métodos y que ambos son confiables como pruebas para el análisis confirmatorio de VIH en el Banco de Sangre, sin embargo, el método GeniusTM ofrece ventajas por practicidad.

Background: There are different confirmatory methods approved by standard 253 to detect HIV-1 or HIV-2 infection, such as: Western blot, Immunofluorescence, Recombinant immunoassay, among others. Objective: Compare the concordance of recombinant immunoassay (GeniusTM) versus Western blot (WB) tests for confirmatory analysis of HIV-reactive samples in donors at the Blood Bank. Methods: Samples that repeatedly showed reactivity for HIV during chemiluminescence screening were analyzed. Confirmatory tests were applied by Western Blot and Recombinant Immunoassay (GeniusTM). A double-blind study was carried out using 39 reactive and 41 non-reactive samples by HIV serology. The results were submitted to Diagnostic agreement Results: When analyzed with WB, the 39 samples with a reactive result gave a positive result and of the 41 samples with a non-reactive result, 35 were found to have negative results and 6 were indeterminate. When analyzed with GeniusTM, the 39 samples with reactive results gave positive results and the 41 non-reactive samples gave negative results. The Kappa index obtained was 0.85. Conclusions: It was found that there is a high agreement between the two methods and that both are reliable as tests for confirmatory analysis of HIV in the Blood Bank, however, for practicality the GeniusTM method offers more advantages.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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