83 yr female. Ct for kidney stones shows calcifcation abdominal aorta and ivc. Is this normal for age? Ldl good HDL slightly low. Bp good. A1c 5.7

Normal for age. This is a normal finding for your age. Unless there is calcification that is separated from the arterial wall, i would not be concerned about this. It does suggest that you will be prone to systolic hypertension (the top number) and that it might be hard to treat.