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Post lunch blood sugar test

Testing your blood sugar levels is a diagnosis for diabetes. The test may be recommended either before your lunch or after your lunch; as both the types have some significance.

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Here we shall deal with post lunch blood sugar test which is also known as postprandial glucose test. We shall explain you the test below:

Why is post lunch blood sugar test recommended?

This test is recommended as a screening test for diabetes. Everyone can take up the test. However, it is mandatory for those who have insulin related disorders and are at high risk of having diabetes.

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Apart from this, post lunch blood sugar test also helps to assess improvement in your diabetes. If you are a diabetic patient then this test would be a part of your diabetes care regimen.

Secondly, it is also a screening test for gestational diabetes for pregnant women. They might need to undergo this test throughout their pregnancy.

Explaining post lunch blood sugar test

From the name you can guess that this test is done after your lunch. Our sugar level usually rises after meal which is then stabilized by the hormone insulin. It takes 2 hours for the hormone to remove the sugar from the blood and metabolize it for the production of energy. People who have diabetes do not make enough insulin and the sugar spike remains after a meal, i.e. it is not normalized. Thus, from this test your doctor can diagnose diabetes.

How to prepare for the test?

Your doctor might ask you to eat a high carbohydrate meal or a particular size of lunch on the day of the test. Once your lunch is over, you cannot eat anything before the test.

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How is the test performed?

The test is very simple. It is done after 2 hours of your lunch. You need to visit the hospital and the nurse/technician will collect your blood sample from a vein in your arm. The sample would be tested for blood sugar.

Interpretation of post lunch blood sugar test reports

According to american diabetic association for non diabetic normal blood sugar levels are 70 to 140 mg/dl one to two hours after a meal. Blood sugar levels below 70mg/dl is considered as low blood sugar or hypoglycaemia.

What interferes with post lunch blood sugar test result?

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Your physical activity (exercise) and mental state like emotional stress, depression, etc. interfere with test reports. If you eat anything in between the period of lunch and the test, then your blood sugar results are bound to vary and you have to give the test again.

Efficiency of post lunch blood sugar test

The test is effective if you follow your doctor’s instructions carefully before giving your blood. Post lunch blood sugar test is usually paired with pre meal test or pre-prandial test. This improves the efficiency of the test and helps your doctor evaluate the fluctuation in blood sugar levels between the meals.

It is for the same reason, you might need to undergo glucose fast test, glucose tolerance test and A1C test along with pre and post lunch test.

Written by: healthplus24.com team

Date last updated: April 10, 2016