Table 3.
Values of 5th, 10th, 25th and 50th percentiles for 24-h urinary citrate excretion for boys and girls with stratification into three age subgroups
| Urinary citrate excretion parameters | Boys | Girls | ||||||
|---|---|---|---|---|---|---|---|---|
| 5 % | 10 % | 25 % | 50 % | 5 % | 10 % | 25 % | 50 % | |
| Age group: 2–6.99 years | ||||||||
| Citrates (mg/dL) | 11.2 | 14 | 26 | 41 | 15.2 | 20 | 30 | 52 |
| Citrates (mg/24 h) | 67.1 | 108 | 168 | 259 | 87.2 | 115 | 169 | 279 |
| Citrates (mg/g creatinine/24 h) | 242 | 329 | 516 | 763 | 290 | 365 | 558 | 863 |
| Citrates (mg/kg/24 h) | 4.2 | 6.1 | 9.3 | 13.5 | 5.2 | 6.8 | 9.6 | 15,1 |
| Citrates (mg/1.73 m2/24 h) | 177 | 264 | 401 | 591 | 218 | 284 | 408 | 651 |
| Age group: 7–12.99 years | ||||||||
| Citrates (mg/dL) | 11.3 | 16 | 29 | 50 | 18.8 | 25 | 38 | 64 |
| Citrates (mg/24 h) | 102 | 161 | 280 | 425 | 161 | 213 | 308 | 446 |
| Citrates (mg/g creatinine/24 h) | 139 | 220 | 360 | 550 | 261 | 341 | 490 | 687 |
| Citrates (mg/kg/24 h) | 3.1 | 4.5 | 7.4 | 11.3 | 5.0 | 6.4 | 9.2 | 12.8 |
| Citrates (mg/1.73 m2/24 h) | 162 | 240 | 400 | 600 | 253 | 331 | 481 | 657 |
| Age group: 13–17.99 years | ||||||||
| Citrates (mg/dL) | 10.1 | 15 | 27 | 44 | 21.3 | 28 | 44 | 70 |
| Citrates (mg/24 h) | 130 | 206 | 323 | 490 | 230 | 313 | 444 | 660 |
| Citrates (mg/g creatinine/24 h) | 89 | 144 | 231 | 340 | 216 | 275 | 430 | 611 |
| Citrates (mg/kg/24 h) | 2.2 | 3.2 | 5.2 | 7.7 | 4.2 | 5.3 | 8.3 | 12.3 |
| Citrates (mg/1.73 m2/24 h) | 130 | 200 | 327 | 476 | 248 | 328 | 486 | 729 |