Hi, avid reader of Student Doctor Network, but first time, forum poster. I graduate college back in 2012. I spent some time in higher education, after being denied to medical school. I decided to apply to physical therapy school last year. I am retaking both gen Chemistry and gen Biology at community college. I still have LORs from my professors at my university, but having took those class over four years ago. Should I use a LOR from my CC professor? Or use my old LORs, because they are from upper-level science courses (Neuroscience and Physics)?