Comparison of seven commercial tests for the detection of parvovirus B19-specific IgM.
Several enzyme immunoassays (EIA) for the detection of parvovirus B19 IgM (anti-B19 IgM) are now commercially available. In this study, seven commercial EIAs (Biotrin, DAKO, Viramed, Viratech, R-Biopharm, Mast) were compared with an in-house EIA (MvP-EIA) using native viral B19 particles and the reference IgM radioimmunoassay (MACRIA). A total of 88 sera were tested. Results agreed in 39/88 (44.3%) sera, whereas 47/88 (53.4%) were discrepant and 2/88 (2.3%) gave an equivocal result. Assay sensitivity ranged from 70.3 to 100% and specificity, from 75.9 to 100%. The best results were obtained with two EIAs (Biotrin, DAKO) using baculovirus-expressed B19 proteins as antigen. This study has shown that baculovirus-expressed B19 antibody tests are suitable tools for detecting anti-B19 IgM.
Schwarz
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Max von Pettenkofer Institute for Hygiene and Medical Microbiology, Ludwig Maximilians University, Munich, Germany.
Jäger
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Gilch
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D000914:Antibodies, Viral / Q000097:blood*; D002648:Child; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D007075:Immunoglobulin M / Q000097:blood; D016732:Parvovirus B19, Human / Q000276:immunology / Q000302:isolation & purification*; D011933:Reagent Kits, Diagnostic; D012680:Sensitivity and Specificity
D000914:Antibodies, Viral; D007075:Immunoglobulin M; D011933:Reagent Kits, Diagnostic