So I have browsed through other threads and I have not seen this question answered....I have looked at the websites of DO schools that I am applying to (Western, AZCOM, OUHCOM,NSUCOM) and they state quite explicitly that they would like 1 letter from a science professor and 1 letter from a MD or DO (but DO is strongly preferred). Now my question is this: I have 5 letters in total (2 science profs, 1 humanities, 1 MD and 1 DO) so are their letter requirements set in stone? My DO letter I believe is not as strong as the MD letter, only because I've worked with the MD doc for about 2.5 years. He knows me a lot more and I feel is better able to express why I would make a good physician. Should I call the different adcom offices? Does anyone know of other people who have sent both? Please help. Thanks.