Test Code LAB320 Protime (PT) with International Normalized Ratio (INR)

Intended Use

Used in the evaluation of the extrinsic coagulation pathway and the monitoring of Oral Anticoagulant Therapy (OAT).

Coagulometric (Turbidimetric)

RCRH-SPRH-STRH-LDRH-CRH-RHOSH

Required: Platelet-poor plasma (sodium citrate)

Collection Container/tube: Light blue-top (3.2% sodium citrate) tube

Submission Container/Tube: Plastic vial

Specimen Volume: 1.0 mL (minimum volume 0.5 mL)

Collection Instructions: Spin down, remove plasma and spin plasma again. Forward promptly.

Additional Information: Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results.

Ambient: 24 hours

Frozen (Preferred): 14 days

Do NOT refrigerate

Monday through Sunday

85610