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Clinical and Diagnostic Laboratory Immunology, Mar 1996, 147-150, Vol 3, No. 2
T Tolfvenstam, U Ruden and K Broliden
Three different enzyme immunoassays (EIAs) (Parvoscan-B19, IBL parvovirus
B19, and IDEIA parvovirus B19) and one immunofluorescence assay (Biotrin
Parvo B19 IFA) were evaluated for detection of parvovirus B19
immunoglobulin M (IgM) antibodies in 203 clinical serum samples. An IgM
antibody capture radioimmunoassay was used as a reference test. Serum
specimens obtained from patients with clinical symptoms suggestive of
parvovirus B19 infections were used to evaluate the sensitivities of the
assays, which were shown to be comparable for the Biotrin IFA and IDEIA
(97%) and lower for the other two EIAs (90%). In order to test the
specificity of the assays, clinical serum samples with IgM antibodies
against other viruses were examined, as well as sera with rheumatoid factor
activity and sera from healthy pregnant women. The specificities of B19 IgM
antibody detection were 96% for the Biotrin IFA, 96% for IDEIA, 90% for
Parvoscan, and 88% for the IBL assay. These results show that all four
assays can be recommended for diagnostic purposes, although false-positive
results may be seen with other acute viral infections, healthy pregnant
women, and rheumatoid factor-positive samples.
Copyright © 1996 by the American Society for Microbiology. All rights reserved.
Evaluation of serological assays for identification of parvovirus B19 immunoglobulin M
Swedish Institute for Infectious Disease Control, Stockholm.
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