What is the normal international normalized ratio (INR) for clients on warfarin (Coumadin)?

The correct range for the international normalized ratio (INR) for clients on warfarin (Coumadin) is typically between 2 and 3. This therapeutic range is used to effectively manage anticoagulation therapy in patients to prevent blood clots while minimizing the risk of excessive bleeding.

In patients who are receiving warfarin, achieving an INR within this range indicates that the blood’s clotting ability is reduced appropriately to take therapeutic effect; this is crucial for conditions such as atrial fibrillation, deep vein thrombosis, and pulmonary embolism. Monitoring is essential as the INR can fluctuate based on diet, medications, and overall health, so maintaining it within the 2 to 3 range allows healthcare providers to balance the risks effectively.

If an INR is too low (below 2), there is an increased risk of clot formation, and if it is too high (above 3), there is an elevation in the risk of bleeding. Therefore, it is significant to maintain INR levels within this normal range, ensuring optimal therapeutic outcomes.