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Test Code LAB151 C4 Complement

Clinical Information

C4 may be decreased in systemic lupus erythematosus, early glomerulonephritis, immune complex disease, cryoglobulinemia, hereditary angioedema, and congenital C4 deficiency.

Synonym

  • C4

Specimen Required

Preferred Container/Tube: Gold SST Top
Acceptable Container/Tube: Gold SST Top
Specimen Volume: 3 mL
Specimen Minimum Volume: 1 mL

Specimen Stability Information

Ambient: 4 hours
Refrigerated: 8 days

Specimen Collection Information

Outreach Clients: Spin and refrigerate if not received in lab within 4 hours of collection.

Rejection Due To

  • Gross hemolysis
  • Gross icterus
  • Quantity not sufficient
  • Quality not acceptable

Reference Values

8-52 mg/dL

 

Method Description

Turbidimetry

Performing Lab

Clinical Lab UH

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 day

Reporting Name

C4 Complement

CPT Code Information

86160

LOINC Code Information

4498-2