Ordering Recommendation

Aids in diagnosis of hereditary angioedema and monitoring response to therapy.

Mnemonic
C1ESTER
Methodology

Quantitative Nephelometry

Performed

Sun, Wed, Fri

Reported

1-4 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
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.

Remarks
Stability

After separation from cells: Ambient: 2 hours; Refrigerated: 2 hours; Frozen: 2 weeks

Reference Interval

21-39 mg/dL

Interpretive Data



Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

86160

Components
Component Test Code* Component Chart Name LOINC
0050140 C-1-Esterase Inhibitor 4477-6
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • C1 esterase inhibitor
  • C1 Esterase Inhibitor Antigen, S
  • C1 Esterase Inhibitor Antigen, Serum
  • C1 Esterase Inhibitor Quantitative
  • C1 Inactivator, Quantitative
  • C1 Inhibitor
  • C1 Inhibitor Antigenic Protein
  • C1 inhibitor level
  • HAE
  • Hereditary Angioedema
C1-Esterase Inhibitor