| Test Code:C4 | Specimen Collection:Serum |
| Component: Complement C4 | Method: Immunoturbidimetric |
| Collection Notes:Avoid lipemic, moderately or grossly icteric, and hemolyzed samples. |
| Clinical Utility:Useful for the detection of individuals with ongoing immune processes or those with inflammatory disease. |
| CPT Code:86160 | Testing Location:AML |
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