Table 6. Analyte stability measured at different time points and temperatures.
| Time | Temperature | Sample 1 (Human serum) | Sample 2 (Human serum) | sample 3 (Human plasma) | Mean recovery |
|---|---|---|---|---|---|
| 0 hrs | - | 100% | 100% | 100% | - |
| 2 hrs | 4°C | 101% | 104% | 94% | 100% |
| 20°C | 87% | 109% | 103% | 99% | |
| 4 hrs | 4°C | 94% | 85% | 106% | 95% |
| 20°C | 105% | 111% | 95% | 104% | |
| 24 hrs | 4°C | 111% | 119% | 102% | 111% |
| 20°C | 90% | 101% | 115% | 102% |
Two human serum and one plasma sample were measured after 2 hrs, 4 hrs and 4 hours at 4°C and 20°C. All data are shown as mean percentage recovery compared to non-stressed analytes (0 hrs).