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Measured tau protein concentration using the IMR reagent and spiked recovery rate for spiked tau plasma samples.
| Plasma sample No. | Volume ratio (PRA:PRF) | Original concentration (pg/ml) | Expected concentration (pg/ml) | Measured concentration (pg/ml) | Spiked recovery rate (%) |
|---|---|---|---|---|---|
| PRA | — | 21.54 | — | — | — |
| PRB | 95%:5% | — | 99.91 | 99.47 | 99.6 |
| PRC | 75%:25% | — | 413.42 | 418.91 | 101.3 |
| PRD | 50%:50% | — | 805.30 | 737.09 | 91.5 |
| PRE | 25%:75% | — | 1197.18 | 1132.32 | 94.6 |
| PRF | — | 1589.06 | — | — | — |
