Creatinine Level 1.35: What Does It Mean? Normal Ranges & What to Do

For adult males, a normal creatinine level should range from 0.6–1.2 milligrams per deciliter (mg/dL), and for adult females, the normal creatinine level is between 0.5–1.1 mg/dL. Therefore, a creatinine level of 1.35 mg/dL is considered somewhat high.

It's important to consult with a healthcare professional to interpret your results accurately, as certain factors such as body mass, muscle mass, medications, and underlying health conditions can affect creatinine levels.