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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