ARUP's Laboratory Test Directory

Complement Component 5 : 0050156

Mnemonic: C5

Methodology: Quantitative Radial Immunodiffusion
Performed: Tue, Fri
Reported: 3-8 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: Allow specimen to clot for one hour at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube and freeze immediately. (Min: 0.3 mL) Plasma is not recommended.

Storage/Transport Temperature: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions: Non-frozen specimens. Specimens exposed to repeated freeze/thaw cycles. Specimens left to clot at refrigerated temperature.

Stability (collection to initiation of testing): After separation from cells: Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks

Reference Interval:
7-20 mg/dL
CPT Code(s): 86160
Cross References: C5 (Complement Component 5)