Table 1.

Correlation of CFU quantification by standard culturing and QC-PCR

Clinical sample no.aCFU/g of feces (wet weight) quantified by:
Culture methodQC-PCR
100
200
300
42.3 × 106 2.5 × 106
55.5 × 106 3.0 × 106
62.1 × 107 3.5 × 107
73.1 × 107 3.1 × 107
81.0 × 107 1.6 × 107
• a Specimens were collected in North Carolina, where CFU were quantified by culture; samples were mailed to Florida, where CFU were quantified by QC-PCR.