Complement Component 1Q Level
0099130
Ordering Recommendation
Aids in the diagnosis of C1q deficiency.
Mnemonic
COMP 1Q
Methodology
Radial Immunodiffusion
Performed
Tue, Fri
Reported
5-10 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Lavender (EDTA) or pink (K2EDTA).  
Specimen Preparation
Separate plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 0.1 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Grossly hemolyzed, hyperlipemic, or room temperature specimens. Serum or non-EDTA plasma.  
Remarks
  
Stability
Ambient: Unacceptable; Refrigerated: 48 hours; Frozen: 1 month  
Reference Interval
109-242 µg/mL  
Interpretive Data
 
Note
For the C1q Binding assay, refer to ARUP test code 0050301. The C1q Binding assay detects circulating immune complexes. The Complement Component 1q Level assay quantifies the active fraction component, C1q, of the C1 complement protein complex.
CPT Code(s)
86160
Components
Component Test Code*Component Chart NameLOINC
0099130Complement Component 1q Level4478-4
* 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
  • C1
  • C1 esterase inhibitor
  • C1q
  • C1q Level
  • Complement Component C1q
  • First Component of Complement
  • Total Complement
  • Total Hemolytic Complement Activity