Activated Partial Thromboplastin Time Inhibitor

CERNER / EPIC MNEMONIC: APTT INH
POE DESCRIPTION: APTT INHIBITOR; APTT INH
CPT CODE: 85732 x3, 85703, 85670
TEST INFORMATION:

Includes Thrombin Time to rule out heparin interference.

DAYS PERFORMED:

Daily, second shift

TURNAROUND TIME: 24-72 hours
SPECIAL INSTRUCTIONS: Transport the specimen to Specimen Receiving as soon as possible. Blood should arrive in the Coagulation Laboratory within 4 hours of drawing.This test cannot be added onto an existing sample more than 4 hours old. 
CONTAINER TYPE:

Two Blue citrate tubes

COLLECTION: See Section - ''Specimen Collection Guidelines'' - Coagulation Specimens
SPECIMEN REQUIREMENTS:

Two 2.7 mL draw light blue top tubes

REJECTION CRITERIA: Specimen hemolyzed; Hct >55%
MINIMUM VOLUME:

Two 2.7 mL draw blue tops

HANDLING INSTRUCTIONS: Transport the specimen to the laboratory as soon as possible. Specimen MUST be received within 4 hours after collection.
REFERENCE RANGE: No circulating anticoagulant identified.
LAST UPDATED:

2-27-2014

TEST SYNONYM(S):Activated Partial Thromboplastin Time Mixing Studies; APTT Inhibitor; APTT Mixing Studies; Inhibitor Screen, APTT; Mixing Studies - APTT