Test Code C4 C4 Complement, Serum
Additional Codes
- Expanse Test Name: Complement C4, S
- Medinet Ref Code: C4
- OV Code: CHEM*C4
Performing Laboratory
St. Lukes Hospital Laboratory
Methodology
Immunoturbidimetric assay
Specimen Requirements
Separated specimens may be stored for up to 7 days at 2 - 8°C.
Draw blood in a serum gel tube(s). (Specimen containing particulate matter or turbid specimen is not acceptable.) Spin down and send 1 mL of serum refrigerated.
Unspun specimens must be transported at ambient temperature and arrive to the laboratory within one hour of draw.
Reference Values
10-40 mg/dL
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
CPT: 86160
LOINC: 4498-2