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International collaborative study on the second EUROHEP HCV-RNA reference panel
M Damen1, H T Cuypers, H L Zaaijer
1Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, Viral Diagnostic Laboratory, Amsterdam, Netherlands.
Journal of Virological Methods
|April 26, 1996
Summary
This study evaluated 86 labs testing Hepatitis C Virus RNA (HCV-RNA) panels. Many tests showed errors, highlighting the need for standardized HCV-RNA reference materials for accurate diagnosis and blood safety.
Area of Science:
- Virology
- Molecular Diagnostics
- Public Health
Background:
- Accurate detection of Hepatitis C Virus RNA (HCV-RNA) is crucial for diagnosis and blood product safety.
- Standardized reference materials are essential for validating and comparing HCV-RNA testing assays.
Purpose of the Study:
- To assess the performance of various laboratories and assays in detecting HCV-RNA using a reference panel.
- To identify variability in HCV-RNA detection methods and highlight the need for standardization.
Main Methods:
- Eighty-six laboratories tested a coded EUROHEP HCV-RNA reference panel containing positive, negative, and diluted plasma samples.
- Assays used included in-house PCR, commercial AMPLICOR HCV-PCR, and other amplification methods.
- Data were evaluated for accuracy, including false positive/negative results and sensitivity in dilution series.
Main Results:
- 16% of results were faultless, while 55% had false positive and/or false negative results.
- Laboratories using commercial tests showed a trend towards better quality scores than those using in-house assays (64% vs. 45%).
- Significant variability in sensitivity (up to 10,000-fold) was observed, with lower detection efficiency for genotype 3 by commercial assays compared to in-house methods.
Conclusions:
- There is substantial variability in HCV-RNA testing performance across laboratories and assays.
- The study underscores the critical need for internationally characterized HCV-RNA plasma standards for assay validation and standardization.
- Standardized reference materials will improve the reliability of HCV diagnosis and the virological safety of blood products.