|Plasma Separator Tube 4.5 mL
Call laboratory for additional acceptable specimen collection containers.
3.0 mL whole blood from light green top tube or TWO
24 hrs/day, 7 days a week, including holidays.
3 hours (upon receipt in laboratory)
1.0 AI (antibody index) or less
SS-A (Ro) antibodies occur in patients with different connective
tissue diseases including Sjogren's syndrome (up to 90% of cases),
lupus erythematosus (LE, 40-60% of cases), and rheumatoid arthritis.
SS-A antibodies are associated with neonatal LE, childhood LE, and
with congenital heart block in infants born to mothers with LE.
Assay methodology and reference ranges changed February 25, 2013.
Multiplex flow immunoassay