TABLE 3.
Quantitative agreement of bacterial targets
| PN panel result (copies/ml) | No. of samplesa
with SOC culture result (CFU/ml) |
|||
|---|---|---|---|---|
| Not detected | 103 | 104 | ≥105 | |
| Not detected | 3,734 | 3 | 0 | 0 |
| 104 | 24 (8) | 6 | 4 | 0 |
| 105 | 27 (17) | 3 | 4 | 1 |
| 106 | 9 (4) | 2 | 12 | 3 |
| ≥107 | 13 (7) | 2 | 15 | 23 |
| % concordantb | 98.1 (3,734/3,807) | 18.8 (3/16) | 11.4 (4/35) | 100 (27/27) |
a
Numbers in parentheses are the numbers of culture-negative results obtained for specimens from patients who received antibiotics with potential activity against the given bacterial target detected within 72 h preceding specimen collection. One laboratory reported bacterial culture quantitation (11 isolates) as “few,” “moderate,” or “many”; these were categorized as 103, 104, and ≥105 CFU/ml, respectively. Shading indicates concordance between the BioFire PN panel and routine culture quantitation.
b
Concordance between the PN panel and culture quantitation among all positive cultures was 43.6% (34/78).