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Table 1 Proportions (%) of stool specimens with indeterminate Xpert® C. difficile assay results that yielded toxin-producing C. difficile in culture stratified by tcdB cycle-threshold and clinical severity

From: Indeterminate tcdB using a Clostridium difficile PCR assay: a retrospective cohort study

Xpert® C. difficileassay tcdBcycle-threshold Patients with indeterminate results (n = 48) Patients who did not meet the C. difficileinfection clinical case definition (n = 9) Patients who met the C. difficileinfection clinical case definition with non-severe clinical disease (n = 32) Patients who met the C. difficileinfection clinical case definition with severe clinical disease (n = 7)
37.1-37.9 6/11 (55) 0/2 (0) 1/4 (25) 5/5 (100)
38.0-38.9 6/16 (38) 1/3 (33) 4/11 (36) 1/2 (50)
39.0-30.9 3/16 (19) 2/3 (67) 1/13 (8) 0
≥40 1/5 (20) 1/1 (100) 0/4 (0) 0