Test Code LAB151 Complement Component 4 (C4)
Additional Codes
Sunquest: C4
Collection
Collect blood in a serum separator or heparin plasma separator tube.
- Preferred:
- Light Green (Heparin Plasma Separator Tube)
- SST (Serum Separator)
- Accepable
- Red (No Additive)
- Green No Gel (Lithium Heparin)
Centrifuge and aliquot 1.0 mL of serum or plasma into a plastic transport vial.
Minimum Volume:
- 0.3mL of serum or plasma (approximately 0.6mL of whole blood based upon a normal patient hematocrit).
Reject Due To:
-
Specimen does not meet collection, storage, or transport requirements.
Stability
Ambient: 48 hours.
Refrigerated: 48 hours.
Frozen: 7 days (Preferred).
Stability Comments:
Remove serum from cells ASAP and freeze.
Method Name
Turbidometric
Performing Laboratory
UnityPoint Health Pathology Laboratory Ankeny, IA
Days Performed:
- Monday-Friday: 0800-2200
- Saturday-Sunday: 0900-1700
Analytical Time:
- 1 Day
CPT Codes
86160