Yes, to get admission into IGIMS Patna into the course of BSc forensic science there is a combined entrance examination which is held by the institute. The eligibility criteria for that examination is
1. The candidate must not be younger than 17 years.
2. Candidate must have attained 45% aggregate in class 12th and 40% aggregate for SC/ST.
These all factors decide your admission into the institution.
Best of luck