| Time | Potassium citrate (Ref) 10 mEq | Potassium citrate (Test) 10 mEq | P between Ref. and Test (10 mEq) | Potassium citrate (Test) 15 mEq | P between Ref. and Test (15 mEq) |
| Beginning | 5.81 ± 0.6 | 5.18 ± 1.6 | 0.17 | 5.73 ± 0.5 | 0.69 |
| Day 7 | 5.73 ± 0.7 | 5.66 ± 0.7 | 0.78 | 5.97 ± 0.6 | 0.37 |
| Day 21 | 5.75 ± 0.5 | 5.74 ± 0.7 | 0.98 | 5.78 ± 0.8 | 0.90 |
| Day 30 | 5.52 ± 0.5 | 6.01 ± 0.6 | 0.04* | 5.8 ± 0.7 | 0.24 |