TABLE 2.
Comparison of sensitivities of C. pneumoniae PCRs by copy number for 96 coded samples
| DNA copy no./μl of sample | % of specimens testing positive (no. testing positive/no. of true positives) in the indicated laboratory or testa
|
|||||
|---|---|---|---|---|---|---|
| A (1 of 1) | B (1 of 3) | C (1 of 4) | D (1 of 2) | E (1 of 1) | RUO (1 of 3) | |
| ≥1.00 | 79 (38/48) | 94 (45/48) | 75 (36/48) | 94 (45/48) | 54 (26/48) | 100 (48/48) |
| 0.10-0.99 | 13 (3/24) | 54 (13/24) | 13 (3/24) | 33 (8/24) | 8 (2/24) | 63 (15/24) |
| <0.10 | 0 (0/24) | 8 (2/24) | 17 (4/24) | 0 (0/24) | 0 (0/24) | 8 (2/24) |
| Total | 43 (41/96) | 63 (60/96) | 45 (43/96) | 55 (53/96) | 29 (28/96) | 68 (65/96)b |
a
Numbers in parentheses after each laboratory or test designation are the minimum number of replicates testing positive and the total number of replicates tested per specimen.
b
The sensitivity of the LCx RUO PCR was similar to that of the laboratory B PCR and greater than that of the PCR of laboratory A, C, D, or E (P < 0.01).