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Comparison of Elecsys ECLIA N-antigen measurements in EDTA/Heparin plasma without vs with addition of the extraction buffer. (95% confidence intervals).
| Sample type | EDTA without vs with extraction buffer | Heparin without vs with extraction buffer |
|---|---|---|
| Number of samples | 10 | 10 |
| Slope | 1.03 (0.96 to 1.1) | 0.99 (0.86 to 1.1) |
| Y-intercept | − 0.046 (− 0.31 to 0.22) | 0.14 (− 0.41 to 0.68) |
| Spearman r | > 0.99 | > 0.99 |
