Antithrombin III Activity

CERNER / EPIC MNEMONIC: AT3 ACT
POE DESCRIPTION: ANTITHROMBIN III FUNCTIONAL; AT3 ACT
CPT CODE: 85300
DAYS PERFORMED:

Daily on second shift

SPECIAL INSTRUCTIONS:

Transport the specimen to Specimen Receiving as soon as possible. Blood should arrive in the Core Laboratory within 4 hours of drawing.This test cannot be added onto an existing sample more than 4 hours old.

CONTAINER TYPE:

Blue citrate tube

COLLECTION:

See Section - " Specimen Collection Guidelines" - Coagulation Specimens

SPECIMEN REQUIREMENTS: Blood, 4.5 mL tube
REJECTION CRITERIA: Specimen hemolyzed; Hct >55%
MINIMUM VOLUME:

1 mL plasma from properly filled tube

HANDLING INSTRUCTIONS: Transport the specimen to the laboratory as soon as possible. Specimen MUST be received within 4 hours after collection.
REFERENCE RANGE: 78 - 122%
LAST UPDATED:

10/12/2011

TEST SYNONYM(S):Antithrombin III Assay; Antithrombin III Functional; Functional Antithrombin III; Heparin Cofactor Activity; Serine Protease Inhibitor; Antithrombin