Ordering Recommendation
Aids in diagnosis of hereditary angioedema and in monitoring response to therapy.
Mnemonic
C1ESTER
Methodology
Quantitative Turbidimetry
Performed
Sun-Sat
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: 0.5 mL)
Storage/Transport Temperature
Refrigerated.
Unacceptable Conditions
Ambient. Grossly hemolyzed and/or lipemic specimens
Remarks
Stability
After separation from cells: Ambient: Unacceptable; Refrigerated: 14 days; Frozen: 1 month.
Reference Interval
Effective November 15, 2021
21-38 mg/dL
Interpretive Data
Compliance Category
FDA
Note
Hotline History
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
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