Creatinine is a breakdown product of creatine, which is an important part of muscle. Creatinine is removed from the body entirely by the kidneys. This article discusses the test done to measure the amount of creatinine in your urine.
A blood test can also be used to determine your creatinine level. See:
Urine creatinine test
A random urine sample or a 24-hour collection may used. For information on how...Read more