C1-Esterase Inhibitor Functional
0050141
Ordering Recommendation
 
Mnemonic
C1 INH F
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Sun, Wed, Fri
Reported
1-4 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Serum separator tube, lavender (EDTA), or pink (K2EDTA).  
Specimen Preparation
Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum or 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
Non-frozen specimens.  
Remarks
  
Stability
After separation from cells: Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks  
Reference Interval
68% or greater: Normal
41-67%: Indeterminate
40% or less: Abnormal  
Interpretive Data
 
Note
 
CPT Code(s)
86161
Components
Component Test Code*Component Chart NameLOINC
0050141C-1-Esterase Inhib. Functional10634-4
* 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 Inh,Func
  • C1 esterase inhibitor
  • C1 Inactivator
  • C1 INH functional
  • Functional Assay, Serum
  • Functional C1 Esterase
  • HAE
  • Hereditary Angioedema