The levels of creatinine that indicates problem are greater than 1.2 for women and greater than 1.4 for men. Creatinine 2.0 or more for children and greater than 5.0 or more for adults indicates severe kidney damage. Thank you.

Above 1.5 mg/dL. Any elevation and its pattern and trend indicate some degree of "kidney problems". Laboratory tests require interpretation by your personal physician.