INR is a specific measure of the level of anticoagulation from coumarin therapy (most common drug being Warfarin).
Outside of coumarin monitoring an INR should not be checked.
As part of coumarin therapy monitoring.
A PDF summary document is available here.
Last reviewed: 03/10/2023
Next review date: 03/10/2024
Version: 1
Approved By: National Demand Optimisation Group - Education Short Life Working Group
Diagnostic Atlas of Variation - education toolkit
