Hi, I had a PT/INR done on Friday and results came back with a 0.9 . I have been taking 7.5 mg of warfarin daily and my doctor advised me to double the dose and take another PT/INR on Wednesday.What I want to know is what dangers do I need to be aware of with my levels being 0.9 ?
Hello, PT/INT is prothrombin time international ratio that measures the coagulating capacity of the plasma. Conditions like warfarin doses, vitamin K deficiency, liver disease, etc. raises PT INR value. Its normal value is 0.8-1.2, however with ongoing warfarin, a value of up to 2.5 is acceptable, rather maintain high INR is our intention when on warfarin therapy. The reason for which you have been on warfarin, is what I would need to know before making further comments. Hope to have satisfied your query. Chat Doctor.