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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
ARUP Consult®
Disease Topics
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