Test

Glucose PP Postprandial / Post Meal Blood Sugar PBS

₹120 ₹75

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Also Known As

#1) 2-Hour Post-Prandial Glucose #2) PPBS Test #3) After-Meal Sugar Test #4) 2-Hour PPG #5) Post-Dinner/Lunch Sugar #6) Glucose - Post Prandial #7) Meal Response Glucose Screen #8) Second Hour Glucose Level #9) Reactive Glucose Assay #10) 2-Hr Fluoride Glucose Test #11) Post-Challenge Glucose Screen #12) Diabetic Meal-Time Audit #13) Insulin Response Check #14) Glycemic Peak Test #15) Hexokinase PP Glucose

Test Parameters Included

Serum Glucose (Postprandial): When you eat, carbohydrates are broken down into glucose, causing blood sugar to rise.
In a healthy body, the pancreas releases insulin to move this sugar into the cells for energy.
By the 2-hour mark, sugar levels should be returning toward normal.
High levels at this stage indicate that the body is either not producing enough insulin or is unable to use it effectively (insulin resistance).

Department

CLINICAL BIOCHEMISTRY

Methodology

Hexokinase : The Hexokinase methodology is the gold standard for glucose measurement. It is an enzymatic process known for its high sensitivity and accuracy. Unlike older methods, Hexokinase is highly specific to glucose and is not affected by other substances in the blood, ensuring that your "after-meal" reading is a true reflection of your glycemic state.

Sample Required

Na Fluoride

Preparation

* The Timing Rule: The blood sample must be drawn exactly 2 hours after you start eating your meal. * The Meal: Eat a balanced, normal-sized meal as recommended by your doctor. Do not overeat or fast excessively before this specific meal. * During the 2 Hours: Do not eat any snacks, candy, or drink anything except plain water between finishing your meal and the blood draw. * Medication: Take your usual diabetes medications with the meal unless your doctor has specifically instructed otherwise. * Rest: Avoid vigorous physical activity during the 2-hour waiting period, as exercise can artificially lower your sugar levels.

Schedule Report

12 Hours

Emergency Report

Yes

Frequently Asked Questions

Why 2 hours? Why not 1 or 3?

For most people, blood sugar peaks at about 1 hour and should be back near normal by 2 hours. This is the internationally recognized window for testing insulin efficiency.

Does the 2-hour timer start when I finish eating?

No. The timer starts from the first bite of your meal.

What should I eat for the "test meal"?

Unless your doctor gives a specific "glucose drink," you should eat a normal, balanced meal that reflects your typical diet.

Can I drink tea/coffee during the 2-hour wait?

Only if it is black and without sugar or milk. However, plain water is the safest choice to ensure accuracy.

Why is the blood collected in a grey-top (Sodium Fluoride) tube?

Sodium Fluoride prevents the blood cells in the tube from consuming the glucose, keeping the sample stable for accurate testing.

Why does the report take 2-3 hours?

This allows for precise automated processing using the hexokinase method, followed by quality verification by a pathologist.

Can I walk around during the 2-hour wait?

Light walking is fine, but avoid heavy exercise, as it helps the muscles burn sugar without needing as much insulin, which might mask a problem.

What if I miss the 2-hour mark by 15 minutes?

Inform the lab technician. Even small timing errors can change the result, as sugar levels drop rapidly during this window.

Does smoking affect PPBS?

Yes, nicotine can increase insulin resistance and may lead to a higher-than-normal reading.

Can I take my metformin before the meal?

Yes, follow your usual medication routine so the test shows how well your treatment is working in a real-world scenario.

Why is my fasting sugar normal but my PPBS high?

This is common in early-stage Type 2 diabetes. The body can manage sugar while resting, but the pancreas cannot keep up with the "spike" from a meal.

Is this test better than a finger-prick?

Yes. Lab-grade venous blood testing using Hexokinase is significantly more accurate than home glucometers.

Can I drink water?

Yes, plain water is allowed and encouraged.

How often should I do this test?

If you are diabetic, it’s often done alongside HbA1c every 3–6 months. For screening, once a year is standard.

What if I feel dizzy during the wait?

If you feel symptoms of low blood sugar (hypoglycemia), inform the lab staff immediately.

Test Description

Glucose PP Postprandial / Post Meal Blood Sugar PBS Examination The Postprandial Blood Sugar (PPBS) test measures the concentration of glucose in you...

Test Code

G05

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