Insulin - Post Prandial

You need to provide
This test is for
Male, Female
Test Preparation
  1. Sample is to be given 2 hours after the start of the meal.
Test Detail
Interpreting Results


What is Insulin-PP?

The Insulin Post-Prandial test, also known as a two-hour postprandial or two-hour PPG sugar test, is done to detect diabetes. In the case of diabetes, the body doesn't make enough insulin to keep your blood sugar in check. This leads to elevated blood sugar levels, and over time this can lead to serious health problems including heart, nerve, kidney, and eye damage.

The insulin test is performed if you have symptoms like sweating, hunger, palpitations, blurred vision, and fainting. The normal insulin postprandial levels range between 5.00 uU/mL - 55.00 uU/mL. The levels are increased in case of obesity and type II diabetes. The PPG levels are decreased in the case of untreated type 1 diabetes mellitus.

Why is Insulin-PP done?

The insulin postprandial test is done:

  • If you have signs or symptoms of low blood glucose (hypoglycemia) like sweating, hunger, confusion, blurred vision, dizziness, palpitations, and sometimes fainting 

  • In case of suspected type 2 diabetes, polycystic ovarian syndrome, heart disease, or metabolic syndrome 

  • To determine the start of insulin therapy if you are a diabetic 

  • In the case of suspected insulinoma 

  • To detect insulin resistance 

What does Insulin-PP Measure?

The insulin postprandial test measures the levels of sugar in the blood after two hours of having food. If a person has diabetes, it means the body is not able to make sufficient insulin to keep blood sugar in check. This can lead to high sugar levels in the blood which can further lead to serious health problems such as eye and nerve damage. 

This test tells how the body gives a response to sugar and starch after ingestion of a meal.  As the food is digested in the stomach, the levels of blood sugar rise high. In response, the pancreas releases insulin so that the sugar is transferred from the blood to the cells of muscles and other tissues where it can be used as fuel. Ideally, within two hours of intake of a meal, the insulin and blood glucose levels should return to normal. In case, the blood glucose still remains high, there are chances that the person might have diabetes.

Interpreting Insulin-PP results


The normal insulin postprandial levels range between 5.00 uU/mL - 55.00 uU/mL.

Answers to Patient Concerns & Frequently Asked Questions (FAQs) about Insulin-PP

Frequently Asked Questions about Insulin - Post Prandial

Q. How is the blood sample taken?
The healthcare provider takes a blood sample from the arm. The site from where the blood is to be withdrawn is cleaned with a swab of rubbing alcohol. This is then followed by inserting a small needle which has a tube attached to it for collecting blood. Once the sufficient blood for analysis is withdrawn, the needle is removed. The site is then covered with a gauze pad.
Q. Is there any risk associated with the withdrawal of blood sample procedure?
As such there is no risk but in few cases, bruising, bleeding, and infection at the puncture site can be seen. In very few cases, there can be swelling of the vein after the blood is withdrawn.
Q. What are the symptoms of diabetes?
The symptoms of diabetes include frequent urination, unusual thirst, blurred vision, tiredness, repeated infections, and slow healing of sores.
Q. What other tests are advised by doctor along with insulin postprandial test?
The other tests include fasting blood glucose test, HbA1c or glycosylated hemoglobin test, and glucose tolerance test.
Q. What does abnormal levels of insulin postprandial test means?
The increased levels of insulin postprandial are seen in case of insulinoma, type II diabetics, infantile hypoglycemia, hyperinsulinism, obesity, cushing’s syndrome, intake of oral contraceptives, acromegaly, and hyperthyroidism. The decreased levels of insulin postprandial are seen in case of untreated type I diabetes mellitus.
Q. What factors can affect the results of insulin postprandial test?
Factors such as smoking during the test period, extreme stress, eating a snack or candy after meal or before the test, not eating the entire meal, and exercise during the test period can affect the results of insulin postprandial test.


Thyrocare Technologies Limited is India's first and most advanced Totally Automated Laboratory having its strong presence in more than 2000 cities / towns in India and internationally. Thyrocare is India's first fully automated diagnostic laboratory with a focus on providing quality at affordable costs to laboratories and hospitals in India and other countries. Thyrocare operates with a Centralized Processing Laboratory (CPL) in Mumbai - India for esoteric tests; and Regional Processing...
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Content created by

Written by
Dr. Betina Chandolia
BDS, MDS - Oral Pathology and Microbiology
Reviewed by
Dr. Ashish Ranjan
MBBS, MD (Pharmacology)
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