Vectra DA is a highly precise, reproducible and validated test to measure RA disease activity
A robust classification of RA disease activity.13
- Vectra DA was validated in adults diagnosed with RA.
- The Vectra DA score was significantly associated with disease activity categories based on DAS28CRP† (P<0.001) in both a study of adults positive for RF and/or anti-CCP* and a separate study of adults who tested negative for RF and anti-CCP antibodies.13**
A highly precise, reproducible measure.28
- Individual samples from 28 patients were each assayed 10 times over different days and with different operators. Patients were selected to span a range of disease activity levels.
† Based on a DAS28CRP cutoff of 2.67 as previously determined by Inoue et al.14
* Patients were selected with the objective of achieving a uniform distribution of disease activity.
** Patients were selected with the objective of a disease activity distribution representative of the cohorts from which they were selected.