Possible causes of low creatinine levels are low muscle mass, liver problems, dietary factors, and pregnancy. If creatine levels are low, it could indicate that the liver or muscles are not working as ...
Average creatinine levels can vary depending on a person’s age, sex, and muscle mass. However, average ranges are 0.7 to 1.2 milligrams per deciliter (mg/dL) for males and 0.5 to 1.0 for females.