Freesneverfree

I see this thread has been dormant a while, but I was wondering if anyone had any information about this hemoglobin limit. I am a CSO putting in an application to UPT and I am getting the run around from medical about having high hemoglobin. The CDC normal range is 13.8 -17.2 g/DL but the Air Force has decided that 16.5 is the highest they will allow.... Mine is 17. Can anyone explain this? Like OP, I am a very active and healthy male. I run a lot (20-50mi/wk on average) and fly quite a bit. I understand that exercise and altitude will increase the body’s production of hemoglobin, so why is high hemoglobin a bad thing? It seems to me that it would be beneficial to have in an oxygen poor environment of an aircraft.... Regardless, like OP, medical did a battery of tests on me that all came back nominal (to include a kidney ultrasound.... I don’t understand the connection here..). They all came back nominal but the NCOIC at the BOMC office would not sign off on my paperwork. I’m hoping someone here knows where this limit comes from or if there is anyway to elevate this without an medical ETP?