Anti-C1q Antibody, IgG
2007601
Ordering Recommendation
Assess risk for lupus nephritis and global SLE disease activity.
Mnemonic
ANTI-C1Q
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Mon
Reported
1-8 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Serum separator tube.  
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Urine or plasma. Contaminated, heat-inactivated, severely hemolyzed or severely lipemic specimens.  
Remarks
  
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)  
Reference Interval
 
 
0-​19 Units Negative
20-​39 Units Equivocal
40 Units or greater Positive
Interpretive Data
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.

See Compliance Statement A: www.aruplab.com/CS  
Note
 
CPT Code(s)
83516
Components
Component Test Code*Component Chart Name
2007602Anti-C1q Antibody, IgG
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • C1q IgG Ab