ANTITHROMBIN III ACTIVITY, Heparin Co-Factor -AT III Functional Activity
Measures activity of AT III present in plasma. Values may decrease in inherited and acquired deficiencies and liver disease. Heparin and Coumadin do not interfere with the assay but may alter physiologic values. Call Special Coagulation Lab (503) 413-5119 for STAT requests, or minimal sample volumes.
Specimen Collection Requirements
Two light blue (3.2% Buffered Sodium Citrate) top tubes
See Coagulation Specimen Collection Guidelines.
Clotted samples, samples collected in containers other than 3.2% Buffered Sodium Citrate, tubes filled less than 90%, samples from patients with a Hematocrit greater than 55%, hemolyzed samples due to ex-vivo causes (i.e., difficult draw, poor sample draw), whole blood samples that were frozen before processing
WHOLE BLOOD Ambient: 4 hours PLASMA Ambient: 4 hours; Frozen: -20°C, 2 weeks, -70°C, 6 months
Legacy Laboratory Services.
Thursday, January 5, 2017 03:41:58 AM