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Sanofi Canada

2905 Place Louis-R.-Renaud
Laval, Quebec, H7V 0A3

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The Link Between FBG, PPG and A1C

FBG, Fasting Blood Glucose, measures blood glucose after you have not eaten for at least 8 hours (for example, before breakfast).


PPG, Post-Prandial Glucose, measures blood glucose after you eat a meal. When you measure PPG, your reading should be done 2 hours after you took your first bite of the meal, and not 2 hours after you finished eating the meal.

Both FBG and PPG contribute to your A1C level. Your A1C is a blood test that represents your average blood glucose over the past 2 to 3 months.

Self-monitoring of blood glucose (SMBG) is very important because it shows more precisely how your readings go up and down during the course of a day.

Depending on your blood glucose patterns and management plan, you and your healthcare team can determine the best times for checking your blood glucose readings to improve your A1C and reduce your risk of developing the complications associated with diabetes. For more information, read our articles on pattern management and on complications of diabetes.