Sigma metrics of vitamin D assay conducted by instruments
| ABVD-13 | ABVD-14 | ABVD-15 | ABVD-16 | ABVD-17 | ABVD-18 | |
|---|---|---|---|---|---|---|
| Reference (ng/mL) | 9.45 | 25.10 | 34.60 | 22.29 | 36.70 | 8.75 |
| ADVIA Centaur | 0.92 | 0.79 | 1.46 | 1.00 | 1.54 | 0.80 |
| LC-MS/MS | 1.59 | 2.35 | 3.02 | 1.83 | 2.08 | 1.67 |
| Architect i System | 3.91 | 3.46 | 3.72 | 1.78 | 1.40 | 2.52 |
| LIAISON | 1.92 | 2.70 | 2.63 | 1.24 | 1.63 | 1.59 |
