Check your vitamin D level. Sometimes high creatine could be because your vitamin D level is either too low or too high. If you see your vitamin D level is too low then start taking vitamin D. If it is too high then you need not get so much sun. I am not sure if you swim outside or inside. If you get alot of sun your vitamin D level could be high and cause creatine level to be high. Also, drink alot of water. It will help big time. Drink like 4-5 bottles a day. Just out of curiosity, do you dink alot of coffee?