From: The effect of tiotropium therapy on markers of elastin degradation in COPD
BODY FLUID | N | LEVELS (mean ± SD) | P VALUE | |
---|---|---|---|---|
 |  | AT BASELINE | AT 2 MONTHS |  |
Plasma ng/ml | 12 | 0.62 ± 0.12 | 0.43 ± 0.10 | 0.0037 |
Urine (free/total %) | 12 | 45.96 ± 8.11 | 38.37 ± 4.43 | 0.0044 |
Sputum ng/ml | 12 | 0.39 ± 0.26 | 0.13 ± 0.02 | 0.0035 |