Do you have an above average muscular build? If so, this is the reason for your elevated creatinine levels. It's perfectly normal in a muscular man and does not indicate possible kidney failure. Several doctors have warned me about my creatinine levels over the years. They are fucking clueless. It wasn't until a couple years ago when my endocrinologist finally put my concerns at ease and explained that elevated creatinine levels are normal in bodybuilders and should be of no concern. Google it.