Test Detail

Antithrombin (AT) Antigen (Immunologic)

Test Code:

015057

Performing Lab: LABCORP BURLINGTON

CPT Code:

85301

Order Information
Results

Specimen Container	Blue-top (sodium citrate) tube
Specimen Type	Plasma, FROZEN
Volume	1 mL
Temperature	FREEZE
Specimen Handling	Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. 1 Evacuated collection tubes must be filled to completion to ensure a proper blood-to-anticoagulant ratio.2,3 The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood. A discard tube is not required prior to collection of coagulation samples unless the sample is collected using a winged (butterfly) collection system. With a winged blood collection set a discard tube should be drawn first to account for the dead space of the tubing and prevent under-filling of the evacuated tube.4,5 When noncitrate tubes are collected for other tests, collect sterile and nonadditive (red-top) tubes prior to citrate (blue-top) tubes. Any tube containing an alternative anticoagulant should be collected after the blue-top tube. Gel-barrier tubes and serum tubes with clot initiators should also be collected after the citrate tubes. Please print and use the Volume Guide for Coagulation Testing to ensure proper draw volume.
Methodology	Automated (LIATEST) Enzyme Immunoassay (EIA)
Stability	, Frozen: 28 days
Unacceptable Conditions	Severe hemolysis; improper labeling; clotted specimen; specimen diluted with IV fluids; samples thawed in transit; improper sample type; sample out of stability
Days Set-Up	SUN-SAT
Shift Performed	1,3
TAT From Set-Up	2 - 3 Days

Result Code	Result Name	LOINC
015057	Antithrombin Antigen	27812-7