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Evaluation of two anti-hepatitis E virus IgM kits
Sheng-Xiang Ge1, Ying-Jie Zheng, Qing-Shun Guo
1National Institute of Diagnostics and Vaccine Development for Infectious Diseases, Xiamen University, Xiamen 361005, Fujian, China.
Biomedical and Environmental Sciences : BES
|March 20, 2008
Summary
Two commercial kits for detecting anti-hepatitis E virus (HEV) IgM were evaluated. The IgM capture assay demonstrated superior sensitivity and specificity for diagnosing acute HEV infection compared to the indirect ELISA kit.
Area of Science:
- Virology
- Immunology
- Diagnostic Medicine
Background:
- Hepatitis E virus (HEV) causes acute enteric viral hepatitis.
- Accurate diagnostic tools are crucial for differentiating HEV from other causes of viral hepatitis, such as hepatitis A virus (HAV).
- Commercial kits for detecting HEV-specific IgM antibodies are available for clinical use.
Purpose of the Study:
- To compare the diagnostic performance of two commercial anti-HEV IgM kits.
- To evaluate their utility in the differential diagnosis of acute viral hepatitis.
Main Methods:
- Two kits were assessed: an IgM capture assay and an indirect ELISA.
- Both kits utilized recombinant HEV structural proteins.
- Serum samples from 241 hepatitis A and 74 hepatitis E cases were tested.
Main Results:
- The IgM capture assay kit showed 97% sensitivity and 100% specificity.
- The indirect ELISA kit yielded 70% sensitivity and 78% specificity.
- Significant performance differences were observed between the two kits.
Conclusions:
- The IgM capture assay kit is a more sensitive and specific diagnostic tool for acute HEV infection.
- This kit offers improved accuracy for diagnosing HEV-induced hepatitis.
- The findings support the use of the IgM capture assay for differential diagnosis of acute viral hepatitis.
