Thanks for writing to us.
The pain in the biceps
that you have after blood donation
is likely to be due to an injury to the nerve
caused by the needle prick. This is mostly a self healing injury
and will recover with time.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Praveen-Tayal
Dr. Praveen Tayal