Anti-C1q Antibody, IgG

Abbrev Code:C1QABY   
Order Code:LAB6751Order Name:Anti-C1q ABY, IgG
Synonyms:Anti C1q Aby IgG
CPT Codes: 83516 x1
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-15 days.

This test uses a manufacturer labeled Analyte Specific Reagent (ASR) as the reagent providing the specificity of the assay. The test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Collection Instructions

Optimal Volume:1 mL
Minimum\Peds Volume:0.5 mL
Container:Red or gold (gel)
Alternate Containers: 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: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.

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