Table 2. Within-run precision for automated analysers Roller 20 PN and iSED on leftover patients’ blood samples with different values of ESR.
| Patients’ samples | Mean value (mm) | Coefficient of variation CV% | Acceptance criteria for within-run precision defined by manufacturer |
|---|---|---|---|
| Roller 20 PN | |||
| Sample A | 16 | 15.7 | |
| Sample B | 22 | 10.2 | |
| Sample C | 27 | 4.1 | 5.7 |
| Sample D | 40 | 4.0 | |
| Sample E | 81 | 16.1 | |
| Sample F | 90 | 2.2 | |
| iSED | |||
| Sample G | 8 | 17.1 | |
| Sample H | 14 | 12.4 | 38.9 |
| Sample G | 17 | 15.4 | |
| Sample K | 24 | 13.1 | |
| Sample L | 30 | 12.1 | |
| Sample M | 72 | 10.7 | 20.3 |
| Sample N | 90 | 10.3 | |
| CV – coefficient of variation. ESR – erythrocyte sedimentation rate. | |||