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CERNER / EPIC MNEMONIC / POE DESCRIPTION / CPT CODE / TEST INFORMATION / DAYS PERFORMED / TURNAROUND TIME / SPECIAL INSTRUCTIONS / CONTAINER TYPE / COLLECTION / SPECIMEN REQUIREMENTS / REJECTION CRITERIA / MINIMUM VOLUME / HANDLING INSTRUCTIONS / REFERENCE RANGE / CRITICAL VALUES / TEST SYNONYM(S)

Prothrombin Time (View in report form.)

CERNER / EPIC MNEMONIC: PT
POE DESCRIPTION: PROTHROMBIN TIME; PROX; PT
CPT CODE: 85610
TEST INFORMATION: Test includes: patient`s seconds and INR
DAYS PERFORMED: Daily, 24 hours
TURNAROUND TIME: Routine: 4 hours. Stat: 1 hour
SPECIAL INSTRUCTIONS:

This test cannot be added onto an existing sample more than 12 hours old.

CONTAINER TYPE:

Blue citrate tube

COLLECTION:

See Section - Specimen Collection Guide - Coagulation Specimens

SPECIMEN REQUIREMENTS:

Blood, 4.5 mL tube or pediatric 1.8 mL or 2.7 mL tubes

REJECTION CRITERIA:

Specimen hemolyzed; Hct >55%

MINIMUM VOLUME: 3.5 mL blood (1.0 mL plasma); pediatric tubes must be fully drawn.
HANDLING INSTRUCTIONS: Transport the specimen to the laboratory as soon as possible. Specimen MUST be received within 4 hours after collection.
REFERENCE RANGE: 9.5-13.2 seconds
CRITICAL VALUES:

INR >7.0

TEST SYNONYM(S):Protime; PT; Quick One-Stage Prothrombin Time

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