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Intra- and inter-assay imprecision of the LC-MS/MS assay. Imprecision was determined three times over the course of four days using ten replicates at each concentration.
| Sample | Conc (μM) from Nephelometry | Intra-assay Conc (μM), Mean | Intra-assay Imprecision (%) | Inter-assay Conc (μM), mean | Inter-assay Imprecision (%) |
|---|---|---|---|---|---|
| Patient 1 | 48.8 | 66.1 | 4.3 | 63.6 | 3.1 |
| Patient 2 | 29.2 | 37.9 | 3.4 | 37.9 | 1.4 |
| Patient 3 | 4.6 | 6.4 | 4.1 | 6.3 | 2.6 |
