Table IV.
PHMA ClinChek Results (µg/L) by Reference Material Level and Method
| Ref. Mat. | Observed mean | SD | CV (%) | N | % Error | Established mean value | Control range |
|---|---|---|---|---|---|---|---|
| Method | |||||||
| ClinChek Level I | |||||||
| A | 4.41 | 0.728 | 16.5 | 5 | –8.7 | 4.83 | 3.86–5.79 |
| B | 5.37 | 0.438 | 8.17 | 3 | 11.2 | ||
| C | 4.25 | 0.256 | 6.01 | 5 | –12.0 | ||
| D | 5.11 | 0.272 | 5.32 | 5 | 5.8 | ||
| E | 4.44 | 0.399 | 8.99 | 5 | –8.1 | ||
| ClinChek Level II | |||||||
| A | 38.5 | 5.87 | 15.3 | 5 | –12.5 | 44.0 | 35.2–52.8 |
| B | 48.5 | 3.58 | 7.37 | 3 | 10.2 | ||
| C | 38.0 | 1.53 | 4.03 | 5 | –13.6 | ||
| D | 46.7 | 3.53 | 7.56 | 5 | 6.1 | ||
| E | 41.7 | 2.94 | 7.05 | 5 | –5.2 |
% Error was calculated as [(observed mean − established mean value)/established mean value] × 100.