My father age is 59, whenever he test for
HbA1c it is under normal limit of 5.8%. But when he test FBS and PPBS sometime both come normal and sometime it comes above normal.MAXIMUM FBS- 132 MG/DL AND PPBS - 181 MG/DL Today also checked after a lunch waited for 2 hours and then tested in Accuchek
Sugar Testing machine. Today it came 181 mg/Dl. What can be the cause for this, HbA1c is normal but FBS and PPBS sometime derange from normal range. Is he is diabetic or pre diabetic?