Electrochemiluminescence immunoassay versus enzyme-linked immunosorbent assay in detection of antibodies of acquired immune deficiency syndrome

  Objective  To compare effect of electrochemiluminescence immunoassay (ECLIA) and enzyme-linked immunosorbent assay (ELISA) in detection of antibodies of human immunodeficiency virus (HIV).

  Methods  A total of 12 457 blood samples were collected from our hospital from January 2017 to June 2018 for detection of HIV. The positive blood samples detected by ECLIA and ELISA were sent to the HIV confirmation center for the further detection. The detection results of ECLIA and ELISA werecompared with those given by HIV confirmation center.

  Results  Totally 35 positive blood samples were detected by ELISA, and the positive rate was 0.28%. Totally 32 positive samples were detected by ECLIA, and the positive rate was 0.26%. Totally 30 positive blood samples were confirmed by the HIV confirmation center. There was no significant difference in the positive rate of HIV antibodies between ELISA and ECLIA (P>0.05). The OD/CO value of positive blood samples detected by ELISA was mostly in the range of 1.35 to 1.80 (P < 0.05), and the larger the OD/CO value was, the higher the coincidence rate with the confirmed results was. The cut-off value of positive samples detected by ECLIA was mostly in the range of 150.00 to 220.00 (P < 0.05), and the larger the cut-off value was, the higher the coincidence rate with the confirmed results was.

  Conclusion  Both ECLIA and ELISA have their own advantages and disadvantages, and how to choice them should be considered comprehensively in clinical application.