RA Disease Activity
Commercial Mail-out Laboratory
Call Commercial Mailouts at 356-8593 for specimen collection kit.
|Gold Top Tube from Vectra DA Kit
4 mL whole blood
Specimen not received at referral laboratory within 7 days of
Deliver to laboratory immediately after collection.
Monday - Friday only
2 to 3 weeks upon receipt at reference laboratory
Low 1 to 29
Moderate 30 to 44
High 45 to 100
Vectra DA measures 12 biomarkers and combines them into a single
disease activity score to assess the key mechanisms and pathways that
drive rheumatoid arthritis (RA) disease activity. Measured biomarkers
are adhesion molecule VCAM-1, growth factors EGF and VEGF-A, cytokine-
related proteins IL-6 and TNF-RI, matrix metalloproteinases MMP-1 and
MMP-3, skeletal-related protein YKL-40, hormones Leptin and Resistin,
and acute phase proteins SAA and CRP. Clinical interpretation of
individual biomarker levels, which have different weights in the
DA algorithm, has not been established.
Vectra DA was validated in adults with RA. Test results are intended
to aid in the assessment of disease activity in RA patients when used
in conjunction with standard clinical assessment. This test is not
intended or validated to diagnose RA.
For a Medicare patient, collect sample greater than 14 days after an
inpatient discharge or an outpatient visit.
A completed, physician-signed test requisition must be submitted with
sample and is available by calling Commercial Mailouts at 356-
Insurance information must be provided on the test requisition.
Crescendo CARE patient assistance program is available for all
commercial insurance and uninsured patients. Apply for financial
assistance by completing the CARE form, available by calling
Mailouts at 356-8583.
83520 x 11, 86140