Nonutility of Repeat Laboratory Testing for Detection of <i>Clostridium difficile</i> by Use of PCR or Enzyme Immunoassay

Abstract excerpt

The diagnostic gains of repeat testing for Clostridium difficile by enzyme immunoassay and PCR (i.e., initial negative result followed by positive result) within a 7-day period were 1.9 and 1.7%, respectively. There is little value of repeat testing for C. difficile by enzyme immunoassay or PCR.

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