Antithrombin antigen

Alphabetical Test listing

Antithrombin antigen-994

  
Antithrombin antigen
  
994
  
LAB994
  
MSO
  
Antithrombin III activity
Antithrombin III, functional
AT
AT3 activity
Factor Xa inhibitor
Heparin Cofactor Activity
Serine Protease Inhibitor
  

Confirmation and characterization of congenital AT deficiency

  
Sodium citrate (Na cit) plasma
  
  
2.0 mL
  
1.0 mL
  

Do not draw from an arm with a heparin lock or heparinized catheter

  
  1. Spin
  2. Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
  3. Freeze
  

Frozen

  
  • Severe hemolysis
  • Improper labeling
  • Clotted specimen
  • Specimen diluted with IV fluids
  • Samples thawed in transit
  • Improper sample type
  • Sample out of stability
  
LabCorp Burlington (015057): R-NX
  
Mo - Fr
  
2 - 3 days
  

Automated (LIATEST) enzyme immunoassay (EIA)

  

72 - 124%

  • In newborns, AT levels are lower than in adults (39% to 89%)
  • Levels gradually reach adult ranges by six months of age
  
85301
  
Result 27812-7
  
06/25/2019
  
02/17/2021