# What is a safe range for INR?

## What is a safe range for INR?

In healthy people an INR of 1.1 or below is considered normal. An INR range of 2.0 to 3.0 is generally an effective therapeutic range for people taking warfarin for disorders such as atrial fibrillation or a blood clot in the leg or lung.

What is considered dangerously high INR?

INR above 8.0 If the INR is greatly above 8.0 (upwards of 10.0 for a patient with no risk factors for falls or haemorrhage), or the patient is elderly and at risk of a fall, 1-2mg of IV phytomenadione may be considered.

What is a bad PT INR?

Even when your INR stays between 2.0 and 3.0, you are more likely to have bleeding problems. INR results higher than 3.0 may put you at even higher risk for bleeding. INR results lower than 2.0 may put you at risk for developing a blood clot.

### Is 1.9 INR good?

An INR of 1.9 or less is associated with an almost doubling of risk for thrombosis compared to an INR within the therapeutic range. So, a dose increase is likely warranted.

What does high INR mean on prothrombin test?

INR levels that are too high may mean you are at risk for dangerous bleeding. Your health care provider will probably change your dose of warfarin to reduce these risks. If you are not taking warfarin and your INR or prothrombin time results were not normal, it may mean one of the following conditions:

How to calculate geometric mean for ProTime and INR?

to calculate geometric mean. The INR is calculated from the following formula: • INR = (PT patient / PT normal )ISI • PT patient is the patient’s PT result expressed in sec-onds. • PT normal is the laboratory’s geometric mean value for normal patients expressed in seconds. When performing the calculation, the values for the patient

## How to stop warfarin Coumadin INR protime dosing algorithm?

Stop warfarin. Contact patient for examination. Stop warfarin for 2 days; decrease weekly dosage by 25% or by 1 mg/d for next week (7 mg total); repeat PT³ in 1 week. Decrease weekly dosage by 15% or by 1 mg/d for 5 days of next week (5 mg total); repeat PT in 1 week.

What does a high INR mean for warfarin?

If you are taking warfarin: INR levels that are too low may mean you are at risk for dangerous blood clots. INR levels that are too high may mean you are at risk for dangerous bleeding. Your health care provider will probably change your dose of warfarin to reduce these risks.