C4 Activation Panel

Test Code
35071


Includes
Complement Component C4c
C4d Fragment, EIA


Preferred Specimen
Red Top

OR
Lavender Top


Minimum Volume
0.5 mL IN EACH

AND


Transport Container
Transport tube


Transport Temperature
Frozen


Specimen Stability
Room temperature: Unacceptable
Refrigerated: 4 hours
Frozen: 14 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Received room temperature • Received refrigerated


Methodology
See individual tests

FDA Status
C4d Fragment, EIA: This test was performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics. This test should not be used for diagnosis without confirmation by other medically established means.

Reference Range
See individual tests




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.