first post here..fantastic site. i will do my best to keep my story short. i was a biotech major from 2001-2004 and stopped during my last year because i was there for all the wrong reasons. my gpa was ~3.0-3.1 during that time. the highest science classes i took were biochem and immunology so i fulfilled all pre-reqs except physics 2. after leaving school, i networked my way into a trading/investment consulting job and worked for 4 years. i wanted to advance further within the company but it was impossible considering i never finished undergrad. so i quit my job and enrolled back in college in 2009 and am completing a double major in math/econ. my current major gpa is ~3.7 with ~1 year before graduation. so the point of my story: i want to give med school another shot. i will spare you guys my reasoning as to why but i will be 32 when i finish this last year of undergrad. i wanted to know if i should retake any of my pre-med science classes over this next year since i am enrolled full time in undergrad. i need to refresh myself for the MCAT and also wanted to get rid of the couple of C's i have in the pre-med curriculum. i was thinking about a post-bacc after i complete my math/econ degree because i doubt my overall gpa would be competitive without it. just looking for opinions on what i should do as far as retaking any classes. i appreciate any help. thanks.