Positive Xpert MTB/RIF Ultra Tests by SR Incubation Time | ||||||
(SR 2:1) Spiked CFU/mL | None (n = 16) | 7.5 minutes (n = 16) | 15 minutes (REF) (n = 16) | |||
n (%) (# Trace) | Avg Ct Value (Range) | n (%) (# Trace) | Avg Ct Value (Range) | n (%) (# Trace) | Avg Ct Value (Range) | |
101 | 2/4 (50%) | 32.1 (32.1) | 4/4 (100%) (3) | 28.1 | 2/4 (50%) | 27.2 (24.3 - 30.1) |
102 | 3/4 (75%) (1) | 26.2 (26.2) | 3/4 (75%) | 30.8 (26 - 35.3) | 3/4 (75%) | 28.2 (24.3 - 33.4) |
104 | 4/4 (100%) | 21.5 (20 - 23.2) | 3/4 (75%) | 18.1 (16.8 - 19.4) | 4/4 (100%) | 24.1 (18.8 - 26.9) |
106 | 4/4 (100%) | 18.1 (16.3 - 18.4) | 4/4 (100%) | 17.6 (16.1 - 17.9) | 4/4 (100%) | 17.9 (17.4 - 18.6) |