21st November 2019


What happens if your warfarin levels are too high?

The PT is reported as the International Normalized Ratio (INR). If the INR is too low, blood clots will not be prevented, but if the INR is too high, there is an increased risk of bleeding. This is why those who take warfarin must have their blood tested so frequently.

Also question is, what causes high prothrombin time?

Causes of prolonged PT include the following: Warfarin use. Vitamin K deficiency from malnutrition, biliary obstruction, malabsorption syndromes, or use of antibiotics. Liver disease, due to diminished synthesis of clotting factors.

What does a high INR number mean?

This ratio — which allows for easier comparisons of test results from different laboratories — is used if you take blood-thinning medications. When the INR is higher than the recommended range, it means that your blood clots more slowly than desired, and a lower INR means your blood clots more quickly than desired.