What Causes Blood Clotting Spot Injury At The Donation Site?
Hii, I am Jyotirmay 22yrs old. 5 days ago , I have donated blood in a blood bank for the 2nd time, it was a voluntary donation, but now I am worried as I am observing some clotting / black spot in the area of my hand from where blood was taken. Would any body explain me please?