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Discordant results and further analysis of Xpert Clostridium difficile and toxigenic culture*
*All samples with initially no growth on anaerobic culture and Clostridium difficile-positive 027/NAP1/BI presumptive negative on Xpert CD assay; †False-positive PCR, residual DNA, or true-positive PCR.
Abbreviations: Xpert CD, Cepheid Xpert Clostridium difficile assay; VIDAS-CDAB, VIDAS Clostridium difficile Toxin A & B assay.
