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HelpTest ID AC1Q Anti-C1q Antibodies, IgG, Serum
Method Name
Enzyme-Linked Immunosorbent Assay (ELISA)
Specimen 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.
Reporting Name
Anti-C1q Antibodies, IgG, SSpecimen Type
SerumSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 21 days |
| Frozen | 21 days |
Report Available
2 to 8 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| AC1Q | Anti-C1q Antibodies, IgG, S | 44702-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| AC1Q | Anti-C1q Antibodies, IgG, S | 44702-9 |
Useful For
Evaluating patients with suspected anti-C1q vasculitis
Predicting renal involvement in patients with systemic lupus erythematosus
Detection of anti-C1q antibodies in serum
Day(s) Performed
Wednesday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
83520
Specimen Minimum Volume
0.4 mL
Reference Values
<20 U/mL (Negative)
20-39 U/mL (Weak Positive)
40-80 U/mL (Moderate Positive)
>80 U/mL (Strong Positive)