Deciding to complete the MCAT for a second time is a decision that can have a significant impact on your chances of being admitted to medical school. It is vital that you correctly assess your first MCAT score to determine if retaking the MCAT is best for you. As a general rule of thumb, if your result is five or more points below your goal score, you should consider sitting for the exam again. However, there are also several factors to examine before solidifying your decision.