Male/52 yr old/6/210 lbs No history of any serious conditions, good physical health. I have a red line going up my upper arm after giving blood.  Gave blood about a week ago, there is now a bruise and the line is coming from it going towards my midline.  There is no pain, it is not hot, I dont have a fever.  Is this a blood clot?
Howell come to ChatDoctorI really appreciate your concern, some time during the vein puncture, vein being counter punctured or extreme low lateral vein puncture could leak the blood and that gets collected beneath the skin and this could be the possible reason of the bruise that you have, but this does not need any medicine and this would come around without the medicine, take care.