Complement Component 3A
2003304
Ordering Recommendation
Follow-up test for complement activity screening when CH50 and AH50 are low or absent and high suspicion remains for complement deficiency.
Submit With Order
Mnemonic
COMP 3A
Methodology
Radioimmunoassay
Performed
Varies
Reported
14-21 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Lavender (EDTA).  
Specimen Preparation
Separate from cells within 1 hour of draw. Transfer 1 mL plasma to an ARUP Standard Transport Tube. Freeze at -70or on dry ice immediately. (Min: 1 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Refrigerated or room temperature specimens.  
Remarks
 
Stability
Ambient: Unacceptable; Refrigerated: Unacceptable: Frozen at -70°C: 1 month  
Reference Interval
By report
Interpretive Data
Note
CPT Code(s)
86160
Components
Component Test Code*Component Chart Name
2003305Complement Component 3A
* 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.
Cross References
  • C3A (Complement Component 3A)
Performed at National Jewish