Evaluation of the positive predictive value of rapid assays used by clinical laboratories in Minnesota for the diagnosis of cryptosporidiosis.

Robinson, Trisha J; Cebelinski, Elizabeth A; Taylor, Charlott; Smith, Kirk E · Clin Infect Dis · 2010

cross_sectional · Level IV

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Abstract

We evaluated the positive predictive value (PPV) of rapid assays used by clinical laboratories in Minnesota to diagnose cryptosporidiosis. The overall PPV was 56% for rapid assays versus 97% for nonrapid assays; clinicians and laboratorians need to be aware of the low PPV of rapid assays when diagnosing cryptosporidiosis.

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