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Complement Component C4c

Test Code
353


CPT Codes
86160

Preferred Specimen
1 mL serum


Minimum Volume
0.5 mL


Transport Temperature
Refrigerated (cold packs)


Specimen Stability
Room temperature: Unacceptable
Refrigerated: 4 days
Frozen: 21 days


Methodology
Immunoturbidimetric

Setup Schedule
Night 6 days a week


Clinical Significance
Decreased C4 level is associated with acute systemic lupus erythematosis, glomerulonephritis, immune complex disease, cryoglobulinemia, congenital C4 deficiency and generalized autoimmune disease.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.