C3a desArg Fragment

Test Code

C3a desArg Fragment

Quest Code

17689

Alias/See Also

C3a

CPT Codes
86161

Preferred Specimen

1 mL (x2) frozen plasma collected in EDTA (lavender-top) tubes

Minimum Volume

0.5 mL in each of 2 tubes

Instructions

Mix the sample and centrifuge immediately after collection to separate plasma from cells. Transfer plasma to a plastic specimen transport container and mark the specimen type as plasma on the container. Freeze immediately.

Transport Container

Transport tube

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 21 days

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

Received room temperature • Received refrigerated • Do not thaw • Animal specimen • Post mortem specimen

Methodology
Enzyme Immunoassay (EIA)

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

Set up: Tues; Report available: 3 days

Reference Range

55-486 ng/mL

Clinical Significance

C3a desArg is a cleavage product of C3 complement component activation. Elevated levels of C3a have been reported in patients with acute lyme disease, acute pancreatitis, systemic lupus erythematosus, and adult respiratory distress syndrome.

Performing Laboratory
Quest Diagnostics Nichols Inst San Juan Capistrano
33608 Ortega Highway
San Juan Capistrano, CA 92675

Last Updated: August 15, 2019

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.