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. 2014 Dec 18;53(1):118–123. doi: 10.1128/JCM.02368-14

TABLE 2.

Coefficient of variation for PCR targets IS481 and ptxS1 (B. pertussis samples), hIS1001 (B. holmesii samples), and pIS1001 (B. parapertussis samples), fall and spring samples combined

PCR target CV (%) for indicated target at a concn (CFU/ml) of:
1 × 103a 1 × 104 1 × 105 1 × 106 1 × 107
IS481 12.0 10.2 14.2 17.2 28.0
ptxS1 8.4 8.3 11.8 12.8 11.9
hIS1001 10.8 —a 14.3 20.7 —
pIS1001 10.0 13.6 — 19.2 —
a

—, samples not provided at this concentration.