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HelpTest Code CMA Centromere Antibodies, IgG, Serum
Reporting Name
Centromere Ab, IgG, SUseful For
Evaluating patients with features of systemic autoimmune rheumatic disease, particularly systemic sclerosis, Sjogren’s syndrome, or overlap disease
Aiding in the phenotypic stratification of patients with systemic sclerosis (limited cutaneous vs diffuse cutaneous or risk for specific clinical manifestations)
Testing Algorithm
For more information see Connective Tissue Disease Cascade.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.35 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 21 days | |
| Frozen | 21 days |
Special Instructions
Reference Values
<1.0 U (negative)
≥1.0 U (positive)
Reference values apply to all ages.
Day(s) Performed
Monday through Saturday
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
83516
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CMA | Centromere Ab, IgG, S | 31290-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CMA | Centromere Ab, IgG, S | 31290-0 |
Report Available
Same day/1 to 3 daysSpecimen Retention Time
14 daysReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | OK |
| Heat-Treated | Reject |
Method Name
Multiplex Flow Immunoassay