Table 2.
Spot and 24 h urinary Na, K, and Cr, by collection day.
| Characteristics | Day 1 (n = 23) | Day 2 (n = 23) | Day 3 (n = 23) |
|---|---|---|---|
| Spot Na (mmoL/L) | 89.0 (59.0) | 90.0 (52.0) | 80.0 (70.0) |
| Spot K (mmoL/L) | 26.7 (14.4) | 32.0 (35.5) | 22.0 (23.4) |
| Spot Cr (mmoL/L) | 9.7 (8.5) | 9.6 (6.8) | 7.3 (5.3) |
| 24 h urine volume (ml) | 1100.0 (580.0) | 1100.0 (995.0) | 1200.0 (700.0) |
| 24 h Na (mmoL/day) | 107.0 (88.0) | 95.0 (45.0) | 80.0 (84.0) |
| 24 h K (mmoL/day) | 33.9 (22.5) | 27.3 (24.1) | 27.5 (21.8) |
| 24 h Cr (mmoL/day) | 9.9 (8.3) | 8.3 (8.4) | 9.9 (9.1) |
Na: sodium, K: potassium, Cr: creatinine. For each day of collections and for each compound, data are presented as median (IQR).