ARUP's Laboratory Test Directory

C1-Esterase Inhibitor : 0050140

Mnemonic: C1ESTER

Methodology: Quantitative Nephelometry
Performed: Sun, Wed, Fri
Reported: 1-4 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.4 mL)

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

Unacceptable Conditions: Non-frozen specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks
Reference Interval:
21-39 mg/dL
CPT Code(s): 86160
Cross References: C1 Esterase Inhibitor Antigen, Serum (C1-Esterase Inhibitor), C1 Inactivator, Quantitative (C1-Esterase Inhibitor), C1 Inhibitor (C1INH) (C1-Esterase Inhibitor)