Table 1.
The recovery (calculated as a difference between added creatinine standard and creatinine concentration in urine) and day-to-day precision (four injections per sample, each day on five different days within two weeks) of the HPLC method.
| Urine Number | Creatinine Concentration [mg/mL] |
Recovery [%] | Day-to-Day Precision | ||
|---|---|---|---|---|---|
| Creatinine Concentration [mg/mL] | RSD [%] | ||||
| +0.75 mg/mL | +1 mg/mL | +2 mg/mL | |||
| 1 | 2.49 ± 0.11 | 91.6 | 98.5 | 104 | 11.49 7.39 3.48 8.28 |
| 2 | 1.56 ± 0.06 | 93.2 | 101 | 108 | |
| 3 | 2.57 ± 0.07 | 89.4 | 102 | 103 | |
| 4 | 1.16 ± 0.10 | 114 | 108 | 111 | |