Question: My job for the last 4 years was as an Infantry Man in the United States Marine Corps,i am in the transition of getting out of the service and moving on to do greater things. Every service member before getting out need to go through a process called a Final Physical wich is pretty much a final check up that includes blood work,a psychological exam etc.I am a little concerned about my blood work ,because i just got my results back and there where a few abnormalities in them.The one that really concerns me is the value of "GFR (aspartate aminotransferase)/non black" with a value of 400.It was highlighted and my military doctor told me that it was a somewhat of a problem.He however didn't take his time to explain what that actually means or what the implications of having this GFR with a value of 400 means.Would you please be so kind as to explain to me what this acronym means,and health wise what it affects.And should i show any concerns for it.