C4 Activation Panel (35071X)

Test Code

10083N

CPT Codes
83520, 86160

Includes

Complement Component C4c, *C4d Fragment

Preferred Specimen

1 mL serum and 1 mL plasma collected in an EDTA (lavender-top) tube

Minimum Volume

0.2 mL plasma and 0.5 mL serum

Instructions

See individual assays

Transport Temperature

Frozen

Specimen Stability

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

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

See individual assays

Methodology
See individual tests

FDA Status
*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.

Setup Schedule

See individual assays

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.