From: Urine colorimetry to detect Low rifampin exposure during tuberculosis therapy: a proof-of-concept study
Rifampin Cmax less than 8 mg/L
Rifampin Cmax greater than 8 mg/L
Urine assay less than 4.0 × 10−2 Abs
7
0
Urine assay greater than 4.0 × 10−2 Abs
18
14