What Does a High Urine Creatinine Mean?
Creatinine is a waste product normally excreted by the kidneys, which is passed in urine. While creatinine itself is caused by muscle metabolism, its presence in urine indicates how well the kidneys are functioning. Your doctor may want to test your creatinine clearance rate, which is a good indicator of whether or not you have kidney disease. High creatinine levels may also indicate other conditions your physician may want to investigate. Read on to learn more about testing for creatinine, why levels may be high or low, and when you should be concerned.