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Slopes of PQ standard lines plotted through low, medium and high QC from each matrix in set 1–3.
| Matrix number | Slope |
||
|---|---|---|---|
| Set 1 | Set 2 | Set 3 | |
| 1 | 1.019 | 0.983 | 1.022 |
| 2 | 1.012 | 0.957 | 1.078 |
| 3 | 1.027 | 0.985 | 1.035 |
| 4 | 1.037 | 0.994 | 1.067 |
| 5 | 1.013 | 1.020 | 0.993 |
| 6 | 1.039 | 1.084 | 1.088 |
| Mean | 1.024 | 1.004 | 1.047 |
| SD | 0.012 | 0.044 | 0.037 |
| Percentage CV | 1.16 | 4.39 | 3.50 |
