Performance evaluation of the FDA-approved Determine™ HIV-1/2 Ag/Ab Combo assay using plasma and whole blood specimens
| Autor: | Silvina Masciotra, Wei Luo, Emily Westheimer, Stephanie E. Cohen, Cynthia L. Gay, Laura Hall, Yi Pan, Philip J. Peters, S. Michele Owen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty HIV Antigens 030106 microbiology Human immunodeficiency virus (HIV) HIV Infections HIV Antibodies medicine.disease_cause Gastroenterology Plasma 03 medical and health sciences 0302 clinical medicine Antigen Virology Internal medicine HIV Seropositivity Humans Mass Screening Medicine Statistical analysis Prospective Studies 030212 general & internal medicine Seroconversion Whole blood Immunoassay biology United States Food and Drug Administration business.industry Significant difference AIDS Serodiagnosis United States Infectious Diseases HIV-2 Immunology HIV-1 biology.protein Reagent Kits Diagnostic Antibody business |
| Zdroj: | Journal of Clinical Virology. 91:95-100 |
| ISSN: | 1386-6532 |
| DOI: | 10.1016/j.jcv.2017.03.019 |
| Popis: | Background The Determine™ HIV-1/2 Ag/Ab Combo (DC) rapid test can identify HIV-1 infection earlier than rapid antibody-only tests in plasma specimens. Objectives We compared the performance of DC with a laboratory-based antigen/antibody (Ag/Ab) combo assay in plasma and evaluated antigen reactivity in whole blood specimens. Study design We tested by DC 508 plasma specimens collected in a prospective study and 107 sequential plasma and simulated whole blood specimens from 20 seroconversion panels. Previous results using the ARCHITECT (ARC) Ag/Ab combo assay were compared to DC results. In seroconversion panels, the days from the first HIV1 RNA-positive test to first DC-reactive in plasma and whole blood was compared. McNemar’s and Wilcoxon signed rank tests were used for statistical analysis. Results Of 415 HIV-positive samples, ARC detected 396 (95.4%) and DC 337 (81.2%) ( p 0.0001 ). DC was reactive in 50.0% of ARC-reactive/MS-negative, 78.6% of ARC-reactive/MS-indeterminate, and 99.6% of ARC-reactive/MS-HIV-1-positive or −undifferentiated specimens. DC antigen reactivity was higher among ARC-reactive/MS-negative than MS-indeterminate samples. In 20 HIV-1 seroconversion panels, there was a significant difference between DC reactivity in plasma (91.1%) and whole blood (56.4%) ( p ). DC with whole blood showed a significant delay in reactivity compared to plasma ( p = 0.008 ). Conclusions In plasma, DC was significantly less sensitive than an instrumented laboratory-based Ag/Ab combo assay. DC in plasma was significantly more sensitive compared to whole blood in early HIV-1 infections. With the U.S. laboratory-based diagnostic algorithm, DC as the first step would likely miss a high proportion of HIV-1 infections in early stages of seroconversion. |
| Databáze: | OpenAIRE |
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