How To Avoid Getting Sick During A Glucose Test? Is It Dangerous For Your Health?

We, our expert healthcare professionals at Act1diabetes research, test & review products independently. Learn more about our process. If you buy something through our links, we may earn a commission.

What's Inside

Are you quite concerned about the upcoming glucose test recommended by your doctor? You might have heard of upsetting stories about women feeling nauseated, sweaty, or lightheaded during the test. No worries. Here we discuss, how to avoid getting sick after taking a glucose test.

What Are The Precautions Taken For Sick During A Glucose Test?

There is absolutely no cause for concern as we discuss tips on how to avoid getting sick during glucose tests. Before getting into the details, first, let’s try to understand why a glucose test is performed.

Precautions Taken For Sick During A Glucose Test

What Is Gestational Diabetes?

When a woman is diagnosed as diabetic for the first time during pregnancy, the condition is called gestational diabetes.

In such cases, it can lead to high blood sugar that can affect both pregnancy and the baby’s health.

You might be shocked to know that the rate of gestational diabetes is as high as 10% among pregnant women.

Why Do Doctors Suggest A Glucose Screening Test?

A glucose screening test helps detect gestational diabetes. Hence, doctors suggest this test for some pregnant women during 24 to 28 weeks of pregnancy.

This test may be done at an earlier stage if you have a high glucose level in your urine during your routine doctor visits. You may also need to undergo a glucose screening test if you have a high risk for diabetes.

How Is The Glucose Screening Test Performed?

There are two types of tests conducted to detect gestational diabetes. Of these, the first one is

1. Two-Step Testing

Here, you have to go through a two-step test or one-hour glucose test. You have to drink a liquid that contains glucose. After an hour of having the solution, your blood will be drawn to check the glucose levels in your blood.

Two-Step Testing

What food to have before the two-step testing?

Do you still think that not eating anything before the test can increase your chances of passing the test? It’s an absolutely wrong notion. Never make the mistake of skipping your breakfast, as it causes your sugar levels to go out of order.

Instead of that, have a meal balanced with healthy carbs and protein the previous night and the morning of your scheduled glucose screening test.

Foods that contain complex carbs are rich in fiber and your body takes a longer time to digest them. As they enter your bloodstream gradually, you will not go through blood sugar spikes. Here are some of the foods that contain complex carbs.

  • Whole grains such as oatmeal and whole-wheat bread.
  • Vegetables include non-starchy ones such as cucumbers, tomatoes, broccoli, green beans, and leafy greens.
  • Fresh fruits such as apples, watermelons, and berries.
  • Legumes such as kidney beans, black beans, chickpeas, and lentils. 

To keep your energy levels high for a long time, make sure that you balance your meal with high-protein foods such as fish, lean meat like poultry, dairy products, and nuts.

Here are some healthy breakfasts that you can have.

A whole-wheat toast would be a great choice. Top it with natural peanut butter or mashed avocado.

Oatmeal is prepared using low-fat milk and topped with fresh berries.

Broccoli and cheddar cheese omelet.

Plain Greek yogurt with blueberries.

Whole wheat burrito filled with beans, scrambled eggs, and tomatoes.

2. One-Step Testing

During the glucose screening, if your blood sugar levels are found to be too high, it shows that your body is not producing enough insulin to process the extra glucose. In such cases, you need to undergo a one-step test, also known as the glucose tolerance test or three-hour glucose test.

One-Step Testing

For 8 to 14 hours before the test, you should not eat or drink anything except sip water. Here you have to drink a liquid that contains glucose. Before you drink the liquid, your blood will be drawn twice every 60 minutes post-drinking the liquid.

What Food To Have Before The One-Step Testing?

1. Have breakfast – Before the glucose screening, have a meal that contains both complex carbohydrates and protein.

2. Stay away from sugars and refined carbs – On the morning of your glucose screening, avoid having high-sugar foods and simple carbs (that include refined grains). The reason is that your body breaks these foods down quickly, causing a rise in blood sugar levels. Thus stay away from foods such as orange juice and other fruit juices, refined cereals, sugary granola, white bread, sugary toppings such as jam or syrup, pancakes, doughnuts, and sweetened baked goods such as muffins, banana bread, or croissants prepared using refined white flour.

If possible, also go for a 10-15minute walk post your meal.


Here we conclude, on how to avoid getting sick during glucose tests. After drinking the glucose solution, some pregnant women may go through problems such as nausea, sweating, or lightheadedness.

However, there is absolutely no need to be concerned, as serious side effects are very rare. Hope the above blog serves as a guide before heading for your glucose test.

About Tim Mathew

Tim Mathew is an Endocrinologist specialized in general endocrinology, diabetes, and lipid metabolism. He earned his Bachelor’s degree in a science-related discipline and completed a medical school program in New York. Once Tim Mathew quoted that Endocrinology is both a challenging and rewarding medical specialty, so he wants to specialize in it. To know more about Tim Mathew kindly go through our about page.

[wd_hustle id="2" type="embedded"/]

Leave a Comment