If your level is higher than 140 mg/dL, you’ll need to take a glucose tolerance test. For low blood sugar between 55-69 mg/dL, raise it by following the 15-15 rule: have 15 grams of carbs and check your blood sugar after 15 minutes. https://sweetrestoreglycogen.com/gluco-control-reasons-its-on-everyones-radar/