Table 2. The recovery of CHI3L1 obtained from spiked samples of CSF.
| Theoretical concentration (μg.L-1) | Measured concentration (μg.L-1) | Average (μg.L-1) | Recovery (%) | |
|---|---|---|---|---|
| 1. measurement | 2. measurement | |||
| 32.3 | 34.0 | 28.3 | 31.2 | 96.4 |
| 149.8 | 162.0 | 158.0 | 160.0 | 106.8 |
| 267.5 | 289.0 | 295.0 | 292.0 | 109.2 |
| 385.3 | 340.5 | 356.0 | 348.3 | 90.4 |
| 503.0 | 512.0 | 535.0 | 523.5 | 104.1 |
The estimated reference interval (28.6–182.5 μg.L-1) showed age-related increase (CHI3L1 = 41.546 + 1,072 * Age, P = 0.0017), sex-related difference was not found (P = 0.837) (Fig 1).