How late can I submit an additional LOR?

I'm in the process of getting letters ready, and so far I've had both my science prof LORs submitted on Interfolio (was most worried about getting these but it was surprisingly easy once I asked). My research PI has also agreed to write one. I was considering asking my work supervisor as well, since I've accumulated a lot of hours at my work study job and I'm on very good terms with him. However, something I'm concerned about is a letter from a non-science professor; he teaches non-science... Read more
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pre-Medical (MD) Source Type: forums