What not to eat before the glucose test?

In this brief article, we will answer the question, “what not to eat before a glucose test?” We will also discuss how you can do a glucose test at home and the best foods to eat before the glucose test.

What not to eat before the glucose test?

You should avoid any food or drink that contains sugar before a glucose test, as this can affect the results. This includes sweetened beverages such as soda, juice, and sports drinks.

It is also important to avoid fatty foods before a glucose test, as they can slow down the absorption of sugar into the blood. 

Additionally, fatty foods can also slow down the emptying of the stomach, which can cause an increase in blood sugar levels. This means that the results of the test may not be accurate. 

You should also avoid alcohol before a glucose test as it leads to falsely high or low readings. Alcohol has properties that interfere with the body’s ability to process glucose. A 24-hour break from alcohol consumption is advised before the test.

It is also best to avoid refined grains that are generally high in sugar and low in fiber, which can cause a spike in blood sugar levels. This jeopardizes the accuracy of the test. 

What is a glucose test?

The blood test carried out to determine the level of glucose in the blood is known as a Glucose test. The body needs energy and utilizes the sugars in the blood known as glucose for this purpose. People with diabetes use the test to monitor blood sugar levels. 

The test is usually done in a laboratory or at a doctor’s office. A prick on the finger or vein in the arm provides a small sample of blood that is tested. The blood is then placed on a strip of paper and the strip is inserted into a machine that measures the level of glucose in the blood.

The level of blood sugar in the blood does affect the test results. Diabetes is an abnormality where the body is not able to process sugar. This condition is what is commonly known as diabetes. Stroke, heart disease, and kidney disease are some of the health problems that are caused by diabetes.

What foods can you eat before the glucose test?

Fresh fruits

The body will metabolize the sugars in fruit before it metabolizes the sugars in glucose, so eating fruit before a glucose test will not affect the test results. You can eat fruits like apples, watermelons, and berries.


Vegetables are a healthy food choice and can be eaten before a glucose test as they control blood sugar levels. Diabetes and prediabetes are diagnosed using glucose tests. Vegetables are feeling and satisfying especially before a glucose test.


Legumes are low on the glycemic index, meaning that they do not cause a spike in blood sugar levels. They also contain complex carbohydrates,  these carbohydrates are broken slowly by the body to provide a steady energy stream.

Eating legumes before a glucose test, therefore, helps to ensure that your blood sugar levels will be stable and within a normal range. This is important because spikes in blood sugar can lead to inaccurate results.

Best legumes to eat include lentils, kidney beans, black beans, and chickpeas.

How can you do a glucose test at home?

The most common way is to use a glucometer, which is a small device that you prick your finger with to draw a small drop of blood. You then touch the drop of blood to a test strip that is inserted into the glucometer, and the device will give you a reading of your blood sugar level. 

You can also use a home blood sugar test kit. This kit will come with lancets, test strips, and a small device called a monitor. You will draw a drop of blood from your finger using the lancet. 

A monitor is used where a test strip with the drop of blood is inserted into it. The blood sugar level will be displayed by the monitor

For more details on foods to eat after a glucose test. Click here


In this brief guide, we have answered the question, “what not to eat before a glucose test?” We have also discussed the best foods to eat before a glucose test and how you can do the glucose test at home.




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