Sample type: Whole Blood

Test name: INR a.k.a. Internationalised Normalised Ratio, PT Prothrombin Time

Condition / Indication: Monitoring of warfarin therapy

Special precautions & notes: Must be assayed within 8 hours

Reference range: 0.8-1.2 (no anti-coagulation), for advice on therapeutic levels contact the anticoagulation monitoring team.

Container: Citrate (Blue top)

Ideal volume (mL): 2.7 mL

Discipline: Haematology

Turnaround time: 24 hours