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DFI commutability assessment of the WHO standard
| Assay | Root variability of patient sample regression line (log10 IU/ml) (%) | Root variability of WHO material regression line (log10 IU/ml) (%) | Avg difference between 2 regression lines (log10 IU/ml) (%) | DFI (log10 IU/ml) |
|---|---|---|---|---|
| ELITech | 0.27 (9) | 0.09 (1) | 0.87 (90) | 0.91 |
| Focus | 0.26 (27) | 0.07 (2) | 0.43 (71) | 0.51 |
| LDT | 0.26 (79) | 0.06 (5) | 0.12 (16) | 0.29 |
| Luminex | 0.32 (12) | 0.07 (1) | 0.86 (87) | 0.92 |
