Table 2. Repeatability and within-lab (total) imprecision for the hs-TnI assay on the Atellica IM analyser at different sites.
| Site | Sample type | Mean Conc. (ng/L) | Repeatability | Within-Lab (total) | ||
|---|---|---|---|---|---|---|
| SD | CV(%) | SD | CV(%) | |||
| A | SP1 SP2 LT L1 L2 |
11.9 26.4 99.2 260.9 5863.9 |
0.5 0.7 1.6 4.3 66.9 |
4.1 2.6 1.6 1.7 1.1 |
0.9 1.5 4.4 11.9 186.9 |
7.6 5.5 4.4 4.6 3.2 |
| B | SP1 SP2 LT L1 L2 |
10.7 25.0 95.0 252.8 5717.0 |
0.4 0.7 1.5 4.4 67.0 |
3.6 2.9 1.6 1.7 1.2 |
0.7 0.9 3.8 10.9 154.9 |
6.8 3.4 4.0 4.3 2.7 |
| C | SP1 SP2 LT L1 L2 |
11.0 25.2 93.0 245.6 5577.7 |
0.4 0.6 1.8 5.5 78.8 |
3.6 2.2 2.0 2.2 1.4 |
0.6 0.8 3.0 7.6 118.7 |
5.5 3.0 3.3 3.1 2.1 |
| D | SP1 SP2 L1 L2 L3 |
11.2 25.4 40.3 3684.1 19,228.1 |
0.5 1.0 0.7 57.4 447.5 |
4.7 3.8 1.7 1.6 2.3 |
0.8 1.0 1.0 67.6 675.3 |
6.7 3.9 2.5 1.8 3.5 |
| hs-TnI – high sensitive troponin I. SD – standard deviation. CV – coefficient of variation. Conc. – concentration. | ||||||