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Evaluation of hepatitis C virus kits
R K Chaudhary1, S Frenette, T Mo
1Laboratory for Viral Hepatitis, Laboratory Centre for Disease Control, Health and Welfare, Ottawa, Canada.
Journal of Clinical Microbiology
|November 1, 1991
Summary
Commercial enzyme immunoassay (EIA) kits detected Hepatitis C virus (HCV) antibodies in most samples. Further testing confirmed high reactivity in EIA-positive samples, with indeterminate results also showing significant HCV presence.
Area of Science:
- Virology
- Immunology
- Diagnostic Testing
Background:
- Hepatitis C virus (HCV) infection is a significant global health concern.
- Accurate antibody detection is crucial for diagnosing HCV infection.
- Evaluating the performance of different diagnostic assays is essential.
Purpose of the Study:
- To assess the performance of commercial enzyme immunoassay (EIA) kits for Hepatitis C virus (HCV) antibody detection.
- To compare the reactivity of EIA-positive samples using the RIBA HCV test.
- To investigate the utility of HCV neutralization EIA for indeterminate and nonreactive RIBA samples.
Main Methods:
- Detection of HCV antibodies using commercial enzyme immunoassay (EIA) kits.
- Confirmation of EIA-positive samples with the RIBA HCV test.
- Analysis of optical density values from EIA to correlate with RIBA results.
- Evaluation of HCV neutralization EIA for samples with indeterminate or nonreactive RIBA results.
Main Results:
- Commercial EIA kits detected HCV antibodies in 85.9% of samples.
- 80% of EIA-positive samples were reactive by the RIBA HCV test.
- Samples with high optical density (≥2.0) showed 87% RIBA reactivity, while low optical density (≤1.0) showed 6.6%.
- 88.4% of RIBA-indeterminate samples were positive by HCV neutralization EIA.
- 29.4% of RIBA-nonreactive samples were also positive by HCV neutralization EIA.
Conclusions:
- Commercial EIA kits are effective in detecting HCV antibodies.
- The RIBA HCV test demonstrates good concordance with EIA results, particularly at higher optical densities.
- HCV neutralization EIA shows potential utility in characterizing samples with indeterminate or nonreactive RIBA results, suggesting possible low-level or past exposure.