TABLE 5.

Sensitivity and specificity of SIMOA toxin assays compared to CDI status using samples that did not get an additional freezing/thawing cycle^a

Test	Sensitivity (% [95% CI]) (n = 47)	Specificity (% [95% CI]) (n = 118)
SIMOA toxin A	85.1 (71.7–93.8)	85.6 (77.9–91.4)
SIMOA toxin B	95.7 (85.5–99.5)	85.6 (77.9–91.4)
SIMOA toxin A + B	95.7 (85.5–99.5)	80.5 (72.2–87.2)
C. difficile Tox A/B II	72.3 (57.4–84.4)	96.6 (91.5–99.1)

^aTotals of 47 GDH- and CCNA-positive samples and 118 GDH- and/or CCNA-negative samples.