Measurement of the sensitivity of different commercial assays in the diagnosis of CMV infection in pregnancy

  • M. Gentile
  • C. Galli
  • P. Pagnotti
  • P. Di Marco
  • S. Tzantzoglou
  • F. Bellomi
  • M. L. Ferreri
  • C. Selvaggi
  • G. Antonelli
Article

DOI: 10.1007/s10096-009-0738-0

Cite this article as:
Gentile, M., Galli, C., Pagnotti, P. et al. Eur J Clin Microbiol Infect Dis (2009) 28: 977. doi:10.1007/s10096-009-0738-0

Abstract

To evaluate the performance of different commercial assays for the detection of recent cytomegalovirus (CMV) in pregnancy, the sensitivity and specificity of assays for CMV-specific IgM antibodies were compared. Routine specimens from pregnant women were screened for CMV IgM using the Abbott AxSYM assay. Sera that were reactive according to AxSYM were further tested for IgM by other commercial assays. In selected IgM positive samples a CMV IgG avidity assay (Radim) and virus isolation from urine (shell vial) were also performed. The positivity rate for IgM anti-CMV by AxSYM was relatively high (140 out of 492, combining reactive and grayzone results). Only 26 of the 140 samples were positive for IgM according to Radim. The IgG avidity was low in 16 of the 43 samples tested, and the Radim and DiaSorin IgM assays were negative in 5 of them; 2 of the latter cases were also positive for viral isolation according to a shell vial method. There are differences in the sensitivity of the commercially available tests for CMV antibodies. CMV screening in pregnancy is performed as a first step by immunoassays and the choice of highly sensitive IgM test associated with further serological and virological methods could help to identify early primary infections.

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • M. Gentile
    • 1
  • C. Galli
    • 3
  • P. Pagnotti
    • 1
  • P. Di Marco
    • 1
  • S. Tzantzoglou
    • 2
  • F. Bellomi
    • 1
  • M. L. Ferreri
    • 1
  • C. Selvaggi
    • 1
  • G. Antonelli
    • 1
  1. 1.Section of Virology, Department of Experimental Medicine, “Sapienza”University of RomeRomeItaly
  2. 2.Department of Infectious and Tropical Diseases, “Sapienza”University of RomeRomeItaly
  3. 3.Medical MarketingAbbott DiagnosticsRomeItaly

Personalised recommendations