My mother, having age o 70 years, has serum cretonne level consistently 1.5. she is hypertensive and taking medicine for last more than 20 years. ?

UsuallyKidneyFailure: Creatinine is a protein made by every body muscle ; serum concentration is used as a way to estimate relative kidney function. Healthy cr typically < 1.0 mg/dl, ↑es with muscle mass, injury ;/or reduced kidney function in hyperbolic relationship. Other than low normal blood glucose ; BP are greatest drivers of kidney failure.