SS-A Antibody
| Label Mnemonic: | SSA |
| Epic code: | LAB344 |
| Downtime form: | A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Chemistry
6240 RCP
356-3527
6240 RCP
356-3527
Specimen(s):
Plasma
Collection Medium:
 |
| Plasma Separator Tube 4.5 mL |
Alternate
Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3.0 mL whole blood from light green top tube or TWO
Microtainer® devices
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around
Time:
3 hours (upon receipt in laboratory)
Reference Range:
1.0 AI (antibody index) or less
Interpretive Data:
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.
Comments:
Assay methodology and reference ranges changed February 25, 2013.
Methodology:
Multiplex flow immunoassay
CPT Code:
86235