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| Total (Spiked and Endogenous) Concentration (pg/mL) (calculated by Standard Addition) | 1110 | 1335 | 3585 | 8585 |
| Mean | 1050 | 1214 | 2885 | 7406 |
| Standard Deviation | 76 | 101 | 212 | 1757 |
| %CV | 7.2 | 8.3 | 7.3 | 23.7 |
| %RE | -5.4 | -9.1 | -19.5 | -13.7 |
