Is 1 a normal inr for someone who has previously been on warfarin and has a history of blood clots?

See below : Yes, it’s a normal ratio. Regular testing of the INR is essential for all people taking warfarin. The risk of bleeding while on warfarin is greatest in patients who have not previously received warfarin, and in the first three months of treatment. during the first three months in particular, to ensure that the INR does not exceed 3.0.