Aid in diagnosis of systemic sclerosis (SSc). Negative results do not rule out SSc. Preferred test is Comprehensive Systemic Sclerosis Panel (3000480).
Semi-Quantitative Multiplex Bead Assay
Serum separator tube.
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.25 mL)
Plasma. Contaminated, hemolyzed, or severely lipemic specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
|29 AU/mL or less||Negative|
|41 AU/mL or greater||Positive|
When detected by this multiplex bead assay, the presence of centromere antibodies is mainly associated with CREST syndrome, a variant of systemic sclerosis (SSc). These antibodies target the centromere B, a dominant antigen of the centromeric complex associated with the centromere pattern observed in antinuclear antibody (ANA) testing by IFA. Centromere antibodies may also be seen in a varying percentage of patients with other autoimmune diseases, including diffuse cutaneous SSc, Raynaud syndrome, interstitial pulmonary fibrosis, autoimmune liver disease, systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA).
A negative result indicates no detectable IgG antibodies to centromere B. If the result is negative but clinical suspicion for SSc is strong, consider testing for ANA by IFA along with other antibodies associated with SSc, including Scl-70, U3-RNP, PM/Scl, or Th/To.
|Component Test Code*||Component Chart Name||LOINC|
|0050714||Centromere Ab, IgG||29966-9|
- Anti-centromere Antibodies
- Anti-Centromere Antibody
- Anticentromere Antibodies
- Centromere Antibodies, IgG
- CENTROMERE ANTIBODY
- Centromere Autoantibodies
- Centromere B