Letters

Commercial assays have high false positive rate

BMJ 1995; 310 doi: https://doi.org/10.1136/bmj.310.6975.327d (Published 04 February 1995) Cite this as: BMJ 1995;310:327
  1. Justin Bendig,
  2. Valerie Meurisse,
  3. Sharon Chambers
  1. Consultant microbiologist Public Health Laboratory, West Park Hospital, Epsom, Surrey KT19 8PB

    EDITOR,—We agree with Philip Rice and colleagues' advice that immunocompromised patients (including all patients taking steroids) who claim not to have had chickenpox previously or are uncertain whether they have had it should be tested for antibodies to varicella zoster virus.1 We advise caution, however, with regard to use of the latex agglutination assay. Over the past 19 months we received 32 serum samples from various laboratories in the south east that used …

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