Comparison of enzyme immunoassay with radioimmunoassay for the detection of antibody to hepatitis B core antigen as the only marker of hepatitis b infection in a population with a high prevalence of hepatitis B

Comparison of enzyme immunoassay with radioimmunoassay for the detection of antibody to hepatitis... Enzyme immunoassay (EIA) and radioimmunoassay (RIA) for the detection of antibody to hepatitis B core antigen (anti‐HBc) were compared using serum specimens from Alaska Natives screened during a hepatitis B control program that were initially positive by EIA for only anti‐HBc. Of 36 specimens from persons previously HBsAg positive but who were now only anti‐HBc positive by EIA, 94.4% were anti‐HBc positive by both assays, with anti‐HBc levels exceeding 93% inhibition. Low‐level antibody to hepatitis B surface antigen (anti‐HBs) (<10 SRU) and antibody to hepatitis Be (anti‐HBe) were also present in 50% and 48% of specimens positive for anti‐HBc, respectively. Of 148 specimens from persons initially positive for only anti‐HBc by EIA who had no previous documentation of any hepatitis B virus (HBV) infection, 64.5% were positive by repeat testing for anti‐HBc by both assays, and anti‐HBc levels in this sample exceeded 70% in 91.6% and 80.2% of specimens by EIA and RIA, respectively. Low‐level anti‐HBs and anti‐HBe were present in 45.8% and 15.6%, respectively. EIA detection of anti‐HBc was found to be less specific than RIA. Of specimens positive for anti‐HBc by EIA, 14.8% were negative by RIA. The specificity of the EIA could be improved with respect to RIA by increasing the cut‐off from 48% to 68%. In samples with lowlevel anti‐HBc (≧70% inhibition) as measured by either method, the anti‐HBc results was less likely to persist upon retesting, whereas sample with anti‐HBc levels of >70% inhibition the anti‐HBc was a reproducible finding frequently accompanied by either low‐level anti‐HBs or anti‐HBe. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Medical Virology Wiley

Comparison of enzyme immunoassay with radioimmunoassay for the detection of antibody to hepatitis B core antigen as the only marker of hepatitis b infection in a population with a high prevalence of hepatitis B

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Publisher
Wiley
Copyright
Copyright © 1990 Wiley‐Liss, Inc., A Wiley Company
ISSN
0146-6615
eISSN
1096-9071
D.O.I.
10.1002/jmv.1890300405
Publisher site
See Article on Publisher Site

Abstract

Enzyme immunoassay (EIA) and radioimmunoassay (RIA) for the detection of antibody to hepatitis B core antigen (anti‐HBc) were compared using serum specimens from Alaska Natives screened during a hepatitis B control program that were initially positive by EIA for only anti‐HBc. Of 36 specimens from persons previously HBsAg positive but who were now only anti‐HBc positive by EIA, 94.4% were anti‐HBc positive by both assays, with anti‐HBc levels exceeding 93% inhibition. Low‐level antibody to hepatitis B surface antigen (anti‐HBs) (<10 SRU) and antibody to hepatitis Be (anti‐HBe) were also present in 50% and 48% of specimens positive for anti‐HBc, respectively. Of 148 specimens from persons initially positive for only anti‐HBc by EIA who had no previous documentation of any hepatitis B virus (HBV) infection, 64.5% were positive by repeat testing for anti‐HBc by both assays, and anti‐HBc levels in this sample exceeded 70% in 91.6% and 80.2% of specimens by EIA and RIA, respectively. Low‐level anti‐HBs and anti‐HBe were present in 45.8% and 15.6%, respectively. EIA detection of anti‐HBc was found to be less specific than RIA. Of specimens positive for anti‐HBc by EIA, 14.8% were negative by RIA. The specificity of the EIA could be improved with respect to RIA by increasing the cut‐off from 48% to 68%. In samples with lowlevel anti‐HBc (≧70% inhibition) as measured by either method, the anti‐HBc results was less likely to persist upon retesting, whereas sample with anti‐HBc levels of >70% inhibition the anti‐HBc was a reproducible finding frequently accompanied by either low‐level anti‐HBs or anti‐HBe.

Journal

Journal of Medical VirologyWiley

Published: Apr 1, 1990

References

  • Diagnostic usefulness of testing for anti‐HBc IgM in acute hepatitis B
    Lindsay, Lindsay; Nizze, Nizze; Koretz, Koretz; Gitnick, Gitnick
  • Prevalence of isolated antibody to hepatitis B in an area endemic for hepatitis B infection: Implications in hepatitis B vaccination programs
    Lok, Lok; Lai, Lai; Wu, Wu
  • Comparison of assays for anti‐HBc in Blood donors
    Schmidt, Schmidt; Leparc, Leparc; Samia, Samia
  • Current tests for antibody to hepatitis B core antigen used to screen donors for non A non B hepatitis are comparable to the original radioimmunoassay for hepatitis B core antigen
    Troisi, Troisi; Hollinger, Hollinger

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