Positive Xpert MTB/RIF Ultra Tests by SR Incubation Time | ||||||
(SR 1:1) 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 | 3/4 (75%) (1) | 30.8 (30.5 - 31.1) | 3/4 (75%) | 35.4 (30.2 - 38.8) | 2/4 (50%) | 28.7 (21.9 - 35.5) |
102 | 4/4 (100%) (1) | 25.7 (24.5 - 26.7) | 3/4 (75%) | 29.2 (23.7 - 34.5) | 3/4 (75%) | 29.6 (22.5 - 37.7) |
104 | 4/4 (100%) | 22.1 (19.6 - 25.4) | 4/4 (100%) | 21.8 (19 - 27.2) | 4/4 (100%) | 21.8 (17.9 - 24.1) |
106 | 4/4 (100%) | 18.5 (18.3 - 18.7) | 4/4 (100%) | 18.1 (17.9 - 18.3) | 4/4 (100%) | 18.7 (18.3 - 19.6) |