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Linear regression equation and linear range of the biological samples.
| Sample | Linear regression equation | r | Linear range (ng/mL) |
|---|---|---|---|
| Blood | ACBD/AIS = 0.0009C‒0.0078 | 0.9994 | 5–2000 |
| Brain | ACBD/AIS = 0.0019C + 0.0089 | 0.9998 | 5–1000 |
| Liver | ACBD/AIS = 0.0023C + 0.0052 | 0.9998 | 5–5000 |
