Performance and diagnostic usefulness of commercially available enzyme linked immunosorbent assay and rapid kits fordetection of HIV, HBV and HCV in India

Virology Journal

Malay Kumar Saha¹  Salil Kumar Sadhukhan¹  Subrata Biswas¹  Srijita Nandi¹  Susmita Maity¹ 

[1] NACO- National Reference Laboratory, National Institute of Cholera and Enteric Diseases, Kolkata, 700010, India

关键词: Specificity;    Sensitivity;    Rapid assay;    ELISA;    Sera panel;    HCV;    HBV;    HIV;    Kit evaluation;   

Others  :  1152951
DOI  :  10.1186/1743-422X-9-290

 received in 2011-08-20, accepted in 2012-11-14,  发布年份 2012

【 摘 要 】

Background

HIV, HBV and HCV pose a major public health problem throughout the world. Detection of infection markers for these agents is a major challenge for testing laboratories in a resource poor setting. As blood transfusion is an important activity saving millions of live every year, it also carries a risk of transfusion transmissible infections caused by these fatal blood borne pathogens if the quality of testing is compromised. Conventional ELISA is regarded as the mostly used screening technique but due to limitations like high cost, unavailability in many blood banks and testing sites, involvement of costly instruments, time taking nature and requirement of highly skilled personnel for interpretation, rapid tests are gaining more importance and warrants comparison of performance.

Results

A comparative study between these two techniques has been performed using commercially available diagnostic kits to assess their efficacy for detection of HIV, HBV and HCV infections. Rapid kits were more efficient in specificity with synthetic antigens along with high PPV than ELISA in most cases. Comparison between different ELISA kits revealed that Microlisa HIV and Hepalisa (J. Mitra & Co. Pvt. Ltd.); ERBA LISA HIV1 + 2, ERBA LISA Hepatitis B and ERBA LISA HCV (Transasia Bio-medicals Ltd.) gives uniform result with good performance in terms of sensitivity, specificity, PPV, NPV and efficiency, whereas, Microlisa HCV (J. Mitra & Co. Pvt. Ltd.), Microscreen HBsAg ELISA and INNOVA HCV (Span Diagnostics Ltd.) did not perform well. Rapid kits were also having high degree of sensitivity and specificity (100%) except in HIV Comb and HCV Comb (J. Mitra & Co. Pvt. Ltd.). The kit efficiency didn’t vary significantly among different companies and lots in all the cases except for HCV ELISA showing statistically significant variation (p < 0.01) among three kit types.

Conclusions

ELISA is a good screening assay for markers of HIV, HBV and HCV infections. Rapid tests are useful for further detection of false positive samples. ELISA seems the appropriate assay in blood bank. For availability of quality commercial diagnostic assays, evaluation of kit may be helpful.

【 授权许可】

   
2012 Maity et al.; licensee BioMed Central Ltd.

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