Blood Glucose – Postprandial (PPBS)

The Postprandial Blood Sugar (PPBS) test, also called Postprandial Plasma Glucose (PPG) or PP2BS (2-Hour Postprandial Blood Sugar), measures the level of glucose (sugar) in your blood 2 hours after starting a meal.

After eating, blood sugar naturally rises as food is digested and absorbed. Insulin helps move glucose from the bloodstream into the body's cells. The PPBS test evaluates how effectively your body manages this rise in blood sugar after a meal.

This test is commonly used to diagnose diabetes, monitor blood sugar control in people with diabetes, and assess the effectiveness of diabetes treatment.

Doctors may recommend the PPBS test to:

• Diagnose diabetes mellitus
• Monitor blood sugar control after meals
• Evaluate the effectiveness of diabetes medications
• Assess insulin function
• Monitor gestational diabetes (as recommended by a healthcare provider)
• Screen individuals at risk of diabetes
• Monitor treatment response in diabetic patients
• Detect uncontrolled blood sugar despite normal fasting glucose

• Fasting is usually required before the meal, typically 8–10 hours, unless your doctor instructs otherwise.
• A fasting blood sample may be collected first, followed by your normal meal or a meal recommended by your healthcare provider.
• The second blood sample is collected exactly 2 hours after starting the meal.
• Eat your usual meal unless specific instructions are given.
• Avoid smoking, alcohol, and vigorous exercise before and during the testing period.
• Continue medications only as directed by your healthcare provider.