ARUP's Laboratory Test Directory

Prothrombin Time : 0030215

Mnemonic: PT

Methodology: Electromagnetic Mechanical Clot Detection
Performed: Sun-Sat
Reported: 1-2 days
Specimen Required: Collect: Lt. blue (sodium citrate).

Specimen Preparation: Separate plasma from cells within 24 hours. Transfer 1 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature: Frozen.

Unacceptable Conditions: Serum. Clotted, hemolyzed, or refrigerated specimens.

Stability (collection to initiation of testing): Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: 2 weeks

Reference Interval:
12.0-15.5 seconds
Note: Reference intervals established using 3.2% sodium citrate.
CPT Code(s): 85610
Cross References: PT (Prothrombin Time)