What is a normal creatinine level?

Normal creatinine levels vary by age, sex, and muscle mass. For most adults, normal levels range from 0.6 to 1.2 mg/dL in males and 0.5 to 1.1 mg/dL in females. Higher creatinine levels can indicate impaired kidney function, while lower levels may occur in individuals with reduced muscle mass. Your healthcare provider will interpret your results in the context of your overall health and medical history to determine if further testing or treatment is necessary.