ARUP's Laboratory Test Directory

Complement Component 1Q Level : 0099130

Mnemonic: COMP 1Q

Methodology: Radial Immunodiffusion
Performed: Tue, Fri
Reported: 5-10 days
Specimen Required: Collect: Lavender (EDTA) or pink (K2EDTA).

Specimen Preparation: Separate plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 0.1 mL)

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

Unacceptable Conditions: Grossly hemolyzed, hyperlipemic, or room temperature specimens. Serum or non-EDTA plasma.

Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: 48 hours; Frozen: 1 month
Reference Interval:
109-242 µg/mL
Note: For the C1q Binding assay, refer to ARUP test code 0050301. The C1q Binding assay detects circulating immune complexes. The Complement Component 1q Level assay quantifies the active fraction component, C1q, of the C1 complement protein complex.
CPT Code(s): 86160
Cross References: C1q Level (Complement Component 1q Level), Complement Component C1q (Complement Component 1q Level), First Component of Complement (Complement Component 1Q Level)