C3 Nephritic Factor, Serum

Test Code

10287

CPT Codes
86161

Preferred Specimen

1 mL (pediatric: 0.25 mL) serum collected in a red-top tube (no gel)

Minimum Volume

1 mL (pediatric: 0.25 mL)

Instructions

Allow blood to clot at room temperature or 37° C for 20 to 60 minutes. Centrifuge to thoroughly remove cells and transfer cell-free serum to a fresh tube. As soon as possible freeze the cell-free serum on dry ice or at -70° C.

Transport Container

Transport tube

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: Indefinitely

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

Gel barrier tubes • Thawed specimen

Methodology
Immunofixation Electrophoresis (IFE)

Setup Schedule

Tues

Report Available

14 days

Reference Range

0.00-0.33 ratio

Performing Laboratory

Advanced Diagnostic Laboratories at National Jewish Health

1400 Jackson Street

Denver, CO 80206-2761

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.