If you are repeating a specific subject and you have the highest score in that subject then you are not eligible for Gold Medal. However if you are a “Odd Batch” or six month back batch and you score the highest marks in a particular subject(you are not repeating the subject or batch) then you are eligible for Gold medal in the subject. Gold Medals are given for June-July(regular) session batches and Jan-Feb(odd) session batches separately.
Dr. Debaleena Chowdhury, BDS/MDS Dentistry, Rajiv Gandhi University of Health Sciences (2013)
Source: Quora Digest