The quickest way to elevate blood sugar levels is to ingest a food or drink that is free of fat or protein but high in sugar. Fats and proteins slow absorption of sugar, keeping out glucose needed to avoid a low blood sugar reaction, according to UCSF Medical Center.
If the blood sugar level is below 70 milligrams per deciliter, eat between 15 and 30 grams of carbohydrates, give the body 15 minutes to process the food, and then test blood sugar levels again, notes UCSF Medical Center. Repeat the process if sugar remains below 100 milligrams per deciliter, retesting after 15 minutes, and repeating if necessary.
Typical foods that contain the right amount of carbohydrates without fat or protein to interfere include candies and other treats, such as a dozen gummy bears, five Life Savers, 15 Skittles or a tablespoon of jam, jelly or honey. A tablespoon of sugar stirred into water works. Beverages that have the right levels include 1/2 cup of pineapple, orange, apple, grape, cranberry, prune or grapefruit juice. A half cup of soda or 1 cup skim milk accomplishes the same goal, as stated by UCSF Medical Center.
Three or four glucose tablets or a tube of glucose gel works in a pinch. Fruits that solve the problem include half a banana, a small apple or orange, 1/2 cup applesauce, 15 grapes or 2 tablespoons of raisins, notes UCSF Medical Center.