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Comparison: Imported and Indigenous HIV Fourth-generation immunodiagnostic kits
Rajesh Kumar Sharma1, Bharti Chauhan1, Ashrat Manzoor1
1Immunodiagnostic Kit Laboratory, National Institute of Biologicals, Noida, Uttar Pradesh, India.
Asian Journal of Transfusion Science
|January 17, 2025
Summary
Early detection of HIV is crucial. Fourth-generation HIV test kits, detecting p24 antigen, show significant variation in sensitivity and reporting units between imported and indigenous assays.
Area of Science:
- Immunodiagnostics
- Infectious Disease Diagnostics
Background:
- Early HIV detection significantly improves patient outcomes.
- Fourth-generation HIV test kits combine antibody and p24 antigen detection for earlier diagnosis.
- Variability in assay performance and reporting units can impact clinical interpretation.
Purpose of the Study:
- To compare the detection capabilities and reporting units of various HIV fourth-generation immunodiagnostic kits.
- To assess the performance of imported versus indigenous HIV testing kits.
- To provide insights for the In Vitro Diagnostics (IVD) market, particularly for 'Make in India' initiatives.
Main Methods:
- Evaluation of 30 different HIV fourth-generation assays.
- Analysis of manufacturer-assigned detection concentrations.
- Comparison of detection ranges and units (IU/mL, pg/mL).
Main Results:
- Imported kits had detection concentrations ranging from 0.48 IU/mL to 2 IU/mL.
- Indigenous kits exhibited a broader detection range, from 25 pg/mL to 1000 IU/mL.
- Significant variability was observed in the sensitivity and units used by different HIV test kits.
Conclusions:
- There is substantial heterogeneity in the performance and reporting standards of HIV fourth-generation kits.
- Understanding these variations is critical for accurate HIV diagnosis and clinical decision-making.
- The findings highlight opportunities for indigenous IVD manufacturers in the competitive global market.
