C4 Quantitative

Message
Performed in the Chemistry Laboratory x5820.
10.2018


Test Code
C4


CPT Codes
86160

Preferred Specimen
Plasma from a green top (PST) tube


Minimum Volume
1 mL


Transport Container
Green Top (PST) tube


Transport Temperature
Room temperature


Specimen Stability
2 - 8 oC: 2 days


Methodology
Immunoturbidimetric

Setup Schedule
This assay is run 24 hours per day, 7 days per week.


Reference Range
14 - 44 mg/dL (1 - 14 years old)
12 - 57 mg/dL (15 - 80 years old)


Clinical Significance
This assay is used in the diagnosis and treatment of various autoimmune disorders including SLE, acute glomerulonephritis, rheumatoid arthritis, and bacterial infection.




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.