Standard curve | Range (μg/mL) | Calibrators | Slope | y-intercept | R2 value |
Day 1 | 50 - 250 | 5 | 993.30 | −2079.5160 | 1.0000 |
Day 2 | 50 - 250 | 5 | 999.60 | −2489.2502 | 1.0000 |
Day 3 | 50 - 250 | 5 | 1002.79 | −2022.8564 | 1.0000 |