LOL. I'm sure they've told all of us this one time or another. According to the Mayo clinic, people with more muscle mass will have higher creatine levels (excuse me if I misspelled anything, you know what I mean). My Immuno globular filtration rate was also not normal. When I went in on a Monday to get blood drawn, after not lifting for a couple of days, the igfr was back to normal but creatine was still elevated which is not a problem since "people with higher muscle mass have higher levels." The first doctors had me scared. Bottom line, every person walking around has some form of slightly impaired kidney function. Drink water, all throughout the day because we're constantly losing water even through breathing. I try and drink every 2 hours because we all thing we're sufficiently hydrated and we're probably not. As stated before, these tests are not reliable to determine true kidney impairment. A specialist will most likely say, "we'll monitor it" because what can they really do? I did cut out protein shakes and now just get all my protein through diet. I really think a couple days need to be taken off of lifting before giving blood because when I go in the morning after squats, my kidney levels come back all screwed up. And let's not forget that high intensity training draws energy from ATP, creatine is converted to ATP, so if you lift, your body has become accustomed to using this type of every vs glucose which you would used if you were a marathon runner hence the higher levels of creatine. Essentially, your body is in a fight or flight state constantly due to your lifestyle/how you train which is not necessarily unhealthy