Table 1.

Summary of MTD results for testing positive BACTEC 12B cultures

SpecimenInitial RLUnMean RLU (±SEM)RLU range
Fresh<30,0001083,931 (± 181)2,130–14,593
30,000–499,9990
≥500,000262.84 × 106 (±0.07 × 106)2.12 × 106–3.41 × 106
Frozen<30,0002074,141 (± 161)1,744–17,399
30,000–499,9991459,404a
≥500,000592.92 × 106 (±0.06 × 106)1.05 × 106–3.58 × 106
  • a Value for repeat testing was 43,058 RLU (positive by MTD and culture).