Anti-C1q Antibody, IgG

Sunquest Code:C1QABY  
Epic Code:LAB6751Epic Name:Anti-C1q ABY, IgG
Synonyms:Anti C1q Aby IgG
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-15 days.

Analyte Specific Reagent. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, the FDA has determined that such clearance or approval is not necessary.

Collection Instructions

Optimal Volume:1 mL
Minimum\Peds Volume:0.5 mL
Container:Red or gold (gel) (Red (no gel))
Causes for Rejection:Urine or plasma. Contaminated, heat-inactivated, severely hemolyzed or severely lipemic specimens.

Processing and Shipping

Specimen Processing:Separate from cells within 2 hours. Centrifuge and aliquot 0.5 mL, 0.15 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Stability: After separation from cells: 48 hours at room temperature; 2 weeks refrigerated, 1 year frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:2007601


Reference Range:

0-19 Units


20-39 Units


40 Units or greater




Use:The presence of the anti-C1q IgG antibody may be associated with increased risk of lupus nephritis or with systemic lupus erythematosus (SLE) global activity. Anti-C1q antibodies are not specific for SLE; strong clinical correlation with disease is recommended.

Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact: for TestID: 6085"