INR tests are most commonly used in anticoagulation therapy (‘blood thinning treatment’) to monitor the effectiveness of warfarin. Warfarin is better known by its commercial name Marevan®. INR tests are performed on a blood sample. The test does not require fasting or morning sampling. The treating physician is always responsible for interpreting your results.

Name and abbreviation of test: THROMBOPLASTIN TIME, INR OUTPUT P -TT-INR

The reference range for P-TT-INR is 0.9–1.2