title: Rapid Immuno-Chromatographic Assay for the Detection of Antibodies to HIV Compare with Elisa among Voluntary and Replacement Blood Donor of Mymensingh Medical College Hospital.
abstract: Suitable algorithms based on a combination of two or more simple rapid HIV assays have been shown to have a diagnostic accuracy comparable to double enzyme-linked immunosorbent assay (ELISA) or double ELISA with Western Blot strategies. The aims of this study were to evaluate the performance of five simple rapid HIV assays using whole blood samples from voluntary and replacement blood donors & HIV-infected patients (positive samples from BSMMU, Dhaka). Five rapid HIV assays: Determine™ HIV-1/2 (Inverness Medical), SD Bioline HIV 1/2 3.0 (Standard Diagnostics Inc.), First Response HIV Card 1-2.0 (PMC Medical India Pvt Ltd.), HIV1/2 Stat-Pak Dipstick (Chembio Diagnostic System, Inc) and Uni-Gold™ HIV-1/2 (Biotech) were evaluated between 1st February to 30th June, 2013 using 400 whole blood samples from voluntary and replacement blood donors. All samples that were reactive on all or any of the five rapid assays and 10% of non-reactive samples were tested on a confirmatory Inno-Lia HIV I/II immunoblot assay (Immunogenetics). Only 01 sample including ten positive samples from BSMMU were confirmed HIV-1 antibody positive, while 399 were HIV negative. The sensitivity at initial testing of Determine, SD Bioline and Uni-Gold™ was 100% (95% CI; 99.1-100) while First Response and Stat-Pak had sensitivity of 99.5% (95% CI; 98.2-99.9) and 97.7% (95% CI; 95.7-98.9) respectively, which increased to 100% (95% CI; 99.1-100) on repeat testing. The initial specificity of the Uni-Gold™ assay was 100% (95% CI; 99.6-100) while specificities were 99.6% (95% CI; 99-99.9), 99.4% (95% CI; 98.8-99.7), 99.6% (95% CI; 99-99.9) and 99.8% (95% CI; 99.3-99.9) for Determine, SD Bioline, First Response and Stat-Pak assays, respectively. There was no any sample which was concordantly false positive in Uni-Gold™, Determine and SD Bioline assays. An alternative confirmatory HIV testing strategy based on initial testing on either SD Bioline or Determine assays followed by testing of reactive samples on the Determine or SD Bioline gave 100% sensitivity (95% CI; 99.1-100) and 100% specificity (95% CI; 96-99.1) with Uni-Gold™ as tiebreaker for discordant results.
authors.affiliation: Professor Pradipesh Chakrabarty, Professor of Transfusion Medicine, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail: drpcbabla@yahoo.com.
authors.forename: P
authors.initials: P
authors.lastname: Chakrabarty
authors.forename: S
authors.initials: S
authors.lastname: Rudra
authors.forename: M A
authors.initials: MA
authors.lastname: Hossain
authors.forename: S A
authors.initials: SA
authors.lastname: Begum
authors.forename: T T
authors.initials: TT
authors.lastname: Mirza
authors.forename: M
authors.initials: M
authors.lastname: Rudra
mesh_terms: D001782:Blood Donors; D004797:Enzyme-Linked Immunosorbent Assay; D015483:HIV Antibodies; D015658:HIV Infections; D006801:Humans; D007194:India; D011933:Reagent Kits, Diagnostic
chemical_list: D015483:HIV Antibodies; D011933:Reagent Kits, Diagnostic