Complement Component C7

Test Code

Quest Code

CPT Codes

Preferred Specimen
1 mL serum

Minimum Volume
0.1 mL

Other Acceptable Specimens
Plasma collected in an EDTA (lavender-top) or PPT Potassium EDTA (white-top) tube

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 21 days
Refrigerated: 21 days
Frozen: 21 days

Radial Immunodiffusion (RID)

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

Report Available
4 to 11 Day(s)

Reference Range
4.0-11.0 mg/dL

Clinical Significance
The complement system is critical to inflammatory responses C5-C9 are components of the common pathway. Patients with congenital deficiency of any of these components are at increased risk of meningococcal meningitis. Unlike the other components, C7 is synthesized in the liver, hematopoietic cells, fibroblasts, and microglial cells and astrocytes of the central nervous system.

Performing Laboratory
Quest Diagnostics Nichols Institute San Juan Capistrano
33608 Ortega Hwy
San Juan Capistrano, CA 92675-2042

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.