<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, few weeks back i had severe pain near the calf muscles. when i showed to vascular surgeon he told there is blood clot in the veins. then he suggested me to get get doppler scanning for DVT . after prescribing acetrom tab 4mg for a week, then he told be to go for PTINR test, the result was Prothrombin time - pt test 10.1 secs control 13.5 inr 1.38. now he has increased the dosage of acetrom tab to 5mg. what does it mean ? is it temporary treatment or should i take it for life long.. pl clarify my doubts ... i am scared pl help me... now there is no clot or pain except in one position i can feel the small lump in the leg where no pain... pl help  <response>: Welcome to Chat Doctor. My dear friend as per your given detail I suggest you to follow your doctor. He is correct. He is increasing dose to put your PTINR level between 2 and 3. This level is safe to prevent any serious complication like stroke if thrombus reach to brain or others complications also. This treatment is for long time. Your doctor will follow your PTINR and DOPPLER. No need to scared because it is curable. Only thing you should know is keep patience and follow your doctor strictly. Thanx for query. 