C4 Activation Panel (35071X)

Test Code

10083N

CPT Codes
83520, 86160

Includes

Complement Component C4c
C4d Fragment, EIA

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
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.

Setup Schedule

See individual assays

Reference Range

See individual tests

Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

Last Updated: November 6, 2024

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.