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 function. The more muscle a person has, the more creatinine they produce. Levels of creatinine in the blood reflect both the amount of muscle a person has and their amount of kidney function. Most men with normal kidney function have approximately 0.6 to 1.2 milligrams/deciliters (mg/dL) of creatinine. Most women with normal kidney function have between 0.5 to 1.1 mg/dL of creatinine. Women usually have lower creatinine levels than men because women, on average, have less muscle than men. Other factors that may affect the level of creatinine in the blood include body size, activity level and medications. To Test your CREATININE LEAVE visit us at GLOVISION DIAGNOSTICS @KONDWA BK, PUNE. We have best pathology laboratory for all kinds of PATHOLOGY TEST......