what is creatinine
Creatinine is a chemical waste product in the blood that passes through the kidneys to be filtered and eliminated in urine.The chemical waste is a by-product of normal muscle contractions. Creatinine is made from creatine, a supplier of energy to the muscle.Women usually have lower creatinine levels compared to men because women have less muscle tissue.hen there is kidney damage or kidney disease, and the kidneys are not able to filter waste efficiently, there will likely be a rise in creatinine levels in the blood. For adults with kidney disease, dialysis is recommended when creatinine levels reach 10.0 mg/dL.