between 2.5 and 3.5. Started at 5mg/day now 5 days at 5mg, 2 days at 2.5mg. I asked the nurse I see weekly for the blood test, "how do we know when the blood clot is gone" she said the Dr may or may not (my next appt is Feb 1) order a Doppler. So for anyone who has been through this, how did you conclude the blood clot was gone - did you have a Doppler or is a Dr able to draw that conclusion from some other data\examination ?