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This test measures your blood sugar levels after an overnight fast (not eating for at least 8 hours). The results are typically given in milligrams per deciliter (mg/dL).
It tends to spike one hour after eating and normalize one hour later. Postprandial blood sugar can be measured with a postprandial glucose (PPG) test to determine if you have prediabetes (140 to 199 mg/dL), type 2 diabetes (200 mg/dL and over), or gestational diabetes (190 mg/dL and over).
Your glucose levels should generally be 140 to 180 mg/dL after eating. But they can rise higher depending on many other factors, including your age and what food or drink you've consumed.
Keep your blood sugar levels consistent by eating every 3–5 hours. Three nutritious meals a day plus a couple of healthful snacks can usually keep your blood sugar steady.
Normal blood sugar ranges one to two hours after eating are typically 180 mg/dL or lower in non-pregnant people with diabetes and 140 mg/dL or lower in pregnant people with diabetes,...
Find out if blood sugar levels are high or low. Then, if needed, change treatment to treat high blood sugar or take fast-acting carbohydrates to treat low blood sugar. Track progress in reaching your treatment goals. Learn how diet and exercise affect blood sugar levels.
If you have diabetes, find out how to test and manage blood sugar levels that go up after you eat, a condition called postprandial blood glucose.