Complement C1 esterase inhibitor, functional

Alphabetical Test listing

Complement C1 esterase inhibitor, functional-13378

  
Complement C1 esterase inhibitor, functional
  
13378
  
LAB13378
  
C1INF
  
C1
C1 esterase inhibitor
C1 Inactivator
C1 inhibitor
Esterase inhibitor
Hereditary angioneurotic edema test
  

Enzyme immunoassay (EIA) to measure functional activity. This method provides C1 esterase function activity as a percentage of mean normal activity.

  

Esterase inhibitor is decreased in hereditary angioneurotic edema. Functional level will be decreased when concentration of inhibitor is decreased or inhibitor is nonfunctional.

  
Serum
  
  
0.5 mL
  
0.1 mL
  
  1. Spin
  2. Separate serum from cells and transfer to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
  3. Freeze

To avoid delays in turnaround time when requesting multiple tests on frozen samples, submit a separate frozen aliquot for each test requested.

  
EDTA plasma
  
  
Serum
Frozen (preferred)
Ambient - 6 hours

EDTA plasma
Frozen (preferred)
Ambient - 24 hours
  
  • Plasma other than EDTA
  • Thawed or non-frozen sample
  
LabCorp Burlington (120220): R-LC
  
Mo, We, Fr
  
2 - 5 days
  

Enzyme immunoassay (EIA)

  
% of mean normal activity
Abnormal: <41%
Equivocal:    41% - 67%
Normal:     >67%
  
86161
  
Result 48494-9
  
03/29/2019
  
11/15/2019
  
02/19/2021