Complement Component 1q, Functional
2008097
Ordering Recommendation
Follow-up test for complement activity screening when CH50 is low or absent and AH50 is normal and high suspicion remains for complement deficiency.
Mnemonic
C1Q FN
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Mon
Reported
1-14 days  
New York DOH Approval Status
Specimens from New York clients will be sent out to a New York DOH approved laboratory, if possible.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Plain red.  
Specimen Preparation
Allow specimen to clot for 1 hour at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.3 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Separator tubes. Specimens left to clot refrigerated. Specimens exposed to repeated freeze/thaw cycles.  
Remarks
  
Stability
After separation from cells: Ambient: Unacceptable; Refrigerated: 2 hours; Frozen: 2 weeks  
Reference Interval
Greater than 76,400 U/mL  
Interpretive Data


See Compliance Statement B: www.aruplab.com/CS  
Note
 
CPT Code(s)
86161
Components
Component Test Code*Component Chart Name
2008098Complement Component C1q Functional
* 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 functionality
  • C1q Functional
  • Functional C1
  • Functional complement