Comparison of two commercial tests (Immy vs. Dynamiker) for cryptococcal capsular antigen

Autor: María Clara Noguera, Patricia Escandón, Javier Rodríguez, Alexander Parody, Leidy Camargo
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Revista da Sociedade Brasileira de Medicina Tropical, Vol 54 (2021)
Druh dokumentu: article
ISSN: 1678-9849
0037-8682
DOI: 10.1590/0037-8682-0307-2021
Popis: Abstract INTRODUCTION Lateral flow assay is an advanced method useful in the early diagnosis of cryptococcal meningitis. We aimed to compare two commercial tests for cryptococcal capsular antigen in the sera of asymptomatic patients with human immunodeficiency virus in Barranquilla, Colombia. METHODS Thawed (n=162) previously collected serums (2016-2019) were processed using IMMY and Dynamiker cryptococcal antigen lateral flow assay. RESULTS Compared to IMMY’s results, Dynamiker’s sensitivity, specificity, positive predictive value, negative predictive value, and kappa index were 100%, 89.9%, 48.3%, 100.0%, and 0.61, respectively. CONCLUSIONS The Dynamiker test had excellent sensitivity, acceptable specificity, and a low detection threshold for cryptococcal antigen in the tested samples.
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