Creatinine levels indicate a person's kidney health, and high levels mean your kidneys are not working as effectively as they ...

Although they share similar names, creatine and creatinine are two distinct compounds. Creatine is a naturally occurring substance in your brain and muscle tissue that gives your muscles energy.

Creatine is a natural substance that helps supply energy to muscles. Creatinine is a waste product produced when creatine is broken down. Rhabdomyolysis, or "rhabdo," occurs when excessive creatinine ...