Re: creatinine levels
It is rather strange that, even knowing that you are a bodybuilder and that you workout regularly, that your high creatinine would bother him. It is true that the creatinine level in your blood reflects your kidney function, but as you have demonstrated, there are some things that have to be taken in to account with the readings. One thing though, seeing if you have kidney damage does not only depend on your creatinine, but also things like the ultrasound (which you said was normal), and also your hemoglobin, and transferrin saturation....do you know if any of those are abnormal? Additionally, the TREND over time of the amount of creatinine in your blood is important. Though it would be acceptable to have YOUR particular creatinine as higher than a regular person's, if it goes up by 10% that's still a significant increase and should be looked after.
The four most common causes of chronic renal failure in N. America are:
secondary to diabetes
polycystic kidney disease
Other than maybe hypertension, I don't think you have any of the above.
The one thing that's preventing me from totally interpreting your case is that we measure our creatinine levels a little differently in Canada. Our normal levels come out to between 60 to about 115.....do you know how to convert your values over?