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HelpTest Code LAB1232123 Smith (Sm) Antibodies, IgG, Serum
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Sm Ab, IgG, SSpecimen Type
SerumSpecimen Required
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.
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | OK |
| Heat treated | Reject |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 21 days | |
| Frozen | 21 days |
Specimen Minimum Volume
0.35 mL
Special Instructions
Day(s) Performed
Monday through Saturday
Specimen Retention Time
14 daysReport Available
1 to 3 daysReference Values
<1.0 U (negative)
≥1.0 U (positive)
Reference values apply to all ages.
Useful For
Evaluating patients with clinical features suggestive of antinuclear antibody associated connective tissue disease and the confirmation of a diagnosis of systemic lupus erythematosus.
Testing for Smith antibodies is not useful in patients without demonstrable antinuclear antibodies.
CPT Code Information
86235
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| SM | Sm Ab, IgG, S | 18323-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| SM | Sm Ab, IgG, S | 18323-6 |