[Not sure if this already came through. If so, just ignore.]
Creatinine was 1.7. Nothing else was out of the ordinary. According to online research (yeah, I know, it's the net), normal is 0.6 to 1.2. (The doctor's assistant, though, told me that 0.5 was normal.) I read that 1.8-1.9 can be normal for people with one kidney. I also read that for adult males who lift weights and who are muscular, such as myself, higher levels can be normal. I don't have a baseline, as I haven't had a physical in years. Never had high potassium before. No medications. I have been taking Isa-Test Testosterone Stimulator (which is over the counter and is supposed to boost testosterone naturally; based on increased nighttime erections I'd say it's working) and OxyElite Pro, which is more or less a caffeine stimulant (trying to burn a little excess fat).
I have several issues with the doctor. (That doesn't mean I necessarily think his prognosis is wrong.) One, all of his assistants are overweight/obese. Two, neither during the physical nor upon delivering the results did he ever ask me about or mention exercise OR diet. Three, his assistant called my emergency contact first (not me, and my phone is always on, and it's always with me) AND told him the results. Four, then the assistant called me right after. Five, the assistant used adjectives ("alarming") to describe the results rather first give me the numbers and then tell me what was normal. Six, the assistant told me I needed to come to their emergency room immediately.
His fear is preserving the remaining kidney, which I fully understand and of course have every incentive to protect. Regardless, my instinct was to do research first. It's my understanding that a 5.1-6.0 reading is considered mildly elevated, that a 6.1-7.0 reading is moderately elevated, and that a level above 7.0 is highly elevated and needs to be treated immediately. If so, I'm on the border of being mildly to moderately elevated, and I eat a diet that's saturated with potassium. I told the doctor I'd come back tomorrow for another reading, but I'm thinking of going elsewhere. On his advice, I've been drinking a lot of water. Not on his advice, I've immediately adjusted to a lower potassium diet, and going forward I'll be counting milligrams and getting tested regularly.