Hi Dr. My father a year ago was detected with stress test positive at work load >10METS. That's why he is on medicine: Ecosprin AV, Metoprolol and Monit SR. Last week he got his regular blood check. The original report contains Serum Creatinine =1.15 (Normal 0.6-1.1) and eGFR =70, all other values are within the range. Is it normal for his age or is there any thing to worry about. His blood pressure used to be 130/80 and age is 57. His height is 6 feet and Weight is 77 kg. Thanks.