It’s not impacting the kidney function. It will skew numbers but it’s not damaging your kidneys. Water intake must be increased along with some type of electrolytes. (Gatorade, liquid IV etc.) like working out intensely then getting blood work will skew the numbers as well. It is kind of a myth that Creatine damages kidneys. Several articles disproving this, I’d post them but don’t know if I can post a link or not……