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Related Experiment Videos

Hepatitis B surface antigen detection using pooled sera. A cost-benefit analysis.

E Fernández1, L Rodrigo, S García

  • 1Service of Biochemistry, Hospital de Cabueñes, Gijón, Spain.

Revista Espanola De Enfermedades Digestivas
|March 29, 2006
PubMed
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A 5-sample pooling strategy using enzyme immunoassay (EIA) for hepatitis B surface antigen (HBsAg) screening is feasible and cost-effective. This method maintains 100% sensitivity and specificity, offering significant cost savings across various prevalence rates.

Area of Science:

  • Hepatitis B diagnostics
  • Immunological assays
  • Public health screening

Background:

  • Hepatitis B surface antigen (HBsAg) screening is crucial for managing and preventing hepatitis B virus (HBV) infection.
  • Enzyme immunoassays (EIA) are commonly used for HBsAg detection.
  • Cost-effectiveness of diagnostic strategies is vital, especially in resource-limited settings.

Purpose of the Study:

  • To evaluate the feasibility of a 5-sample pooling strategy for HBsAg screening using EIA.
  • To conduct a cost-benefit analysis of the proposed pooling method.
  • To assess the diagnostic performance (sensitivity and specificity) of pooled versus single EIA testing.

Main Methods:

  • A 5-sample pooling strategy was tested using 40 HBsAg-positive and 250 HBsAg-negative sera.

Related Experiment Videos

  • Sensitivity and specificity were assessed by comparing pooled results with single sample results.
  • Limit of detection was determined for HBsAg subtypes (ad and ay).
  • A real-world study was performed on pools from 340 pregnant women.

    • Main Results:

    • The pooling method achieved 100% sensitivity and specificity for HBsAg detection.
    • The correlation coefficient between single and pooled sample/cutoff ratios was 0.792 (p < 0.005).
    • Pooling demonstrated lower limits of detection for HBsAg/ad (0.20 ng/mL) and HBsAg/ay (0.12 ng/mL) compared to single testing.
    • Cost savings ranged from 30% to 75% depending on seroprevalence.

    Conclusions:

    • The 5-sample pooled HBsAg EIA is a valid and cost-effective screening strategy.
    • This method performs comparably to single EIA testing.
    • The strategy is suitable for areas with high, medium, or low hepatitis B prevalence.