Fasting Blood Sugar Test: Everything You Need to Know

Can you really understand your health status from your glucose levels? A fasting glucose test is a simple test often suggested by doctors to measure the amount of glucose in your blood. It helps identify diabetes, prediabetes, and gestational diabetes at an early stage. Based on the results, your healthcare provider may decide whether further evaluation or timely management is needed or not. Because increased levels can result in chronic health conditions, it is better to explain the test and why it is done.

What is fasting blood sugar?

Your fasting blood sugar levels are calculated based on the amount of sugar in your blood after you have been fasting for at least 8 hours. As per healthcare professionals, the normal range is less than 100 mg/dL. If the levels are between 100 and 125 mg/dL, the condition is called prediabetes, and if it is greater than 125 mg/dL, it is marked as diabetes.

How does blood glucose affect your body?

It is the primary source of energy for your body's cells as the carbohydrates you eat are broken down into glucose. Your bloodstream then carries it to the cells throughout your body. A hormone called insulin is produced in your pancreas and released into the bloodstream, which carries glucose from the bloodstream into your cells to be used as a source of energy. If too much glucose remains in the bloodstream instead of being absorbed by cells, it can cause serious health concerns over time.

Why do you need a fasting glucose test?

Healthcare providers may suggest this test in cases like:

When you have symptoms like frequent urination, blurred vision, unexpected weight loss, numbness or tingling in your feet or hands, extreme tiredness, and slow-healing cuts.

As part of your annual health checkup to determine if the glucose levels have changed over time.

When you have a family history of diabetes and risk factors such as leading a sedentary lifestyle, following an unhealthy diet with oily-junk food, sugary drinks and packaged juices, consuming tobacco through smoking, and alcohol consumption can also spike blood sugar levels, and have other medical conditions like PCOS and obesity.

For pregnant women to check if pregnancy hormones are leading to diabetes, or not.

High sugar levels may not be a symptom at first; you can have the condition and not know it, hence doctors recommend a fasting blood sugar test to detect or rule out this health issue.

How to prepare for the test?

To prepare for the fasting glucose test, you will be asked not to eat or drink (except water) for 8 to 12 hours right before the test. Other than that, make sure you follow the guidelines given by your doctor and wear loose or comfortable clothes while going for the test.

What to expect after the results?

If the results are abnormal and indicate prediabetes, your healthcare provider may recommend certain lifestyle changes, including regular physical activity and a balanced diet. Further testing may also be required over time to monitor your condition, determine whether it progresses to diabetes, and guide appropriate treatment and management.

Tips to maintain healthy blood glucose levels  

Eat not just healthy, but smart: Add lots of fruits, vegetables, nuts, whole grains, along with lean proteins like fish and seafood. Drink plenty of plain water and avoid red meats, sugary foods and drinks, salty snacks and processed food. 

Stay active: Staying active and exercising regularly can help you reduce the risk of developing type 2 diabetes. It helps manage levels if you are living with it, along with helping you stay fit and clear your mind. 

Maintain a healthy weight: It's better to stay proactive and avoid the risk of blood sugar spikes by managing a healthy weight. You can speak to your doctor to understand where to start. 

Say no to nicotine: Avoid vaping, smoking, nicotine or tobacco; it can make it hard to manage diabetes and pre-diabetes conditions, even if second-hand smoke can be a problem.

Foods to eat to keep sugar spikes in check?

Fruits: Eat fruits that are a great source of vitamins, minerals and dietary fibre such as oranges, berries, apples and other fresh fruits.

Whole grains: Include whole grains in your diet, as they are a great source of fibre, like barley, quinoa, oatmeal and brown rice.

Nuts and seeds: Including nuts and seeds can keep your nutrition in check; they can also help regulate blood glucose levels by reducing the rate at which food is digested. You can include almonds, walnuts, sunflower seeds, or pumpkin seeds in your diet.

Low-fat dairy: Adding dairy products like milk and yogurt contains calcium and can help manage your diabetes over time.

Legumes: Beans, lentils, peas, and chickpeas are another great source of dietary fibre, which can keep your blood sugar levels steady.

What to remember?

A doctor-suggested fasting blood sugar test is an excellent way to examine the risk of diabetes. Knowing glucose levels can help you manage it, and paying attention to the levels over time can let you prepare before the symptoms worsen. Overall, making lifestyle changes is also necessary for better management of a chronic condition like diabetes if it is detected. For further understanding, you can also consult your doctor.

FAQs

1. Is it suitable to drink water before the test?

You can drink only plain water; no food or other type of drink is allowed before going for the test.

2. What are the common signs that indicate that your blood sugar level is high?

Common symptoms of high glucose levels include blurry vision, frequent urination, tiredness, a very dry mouth and constant tiredness.

3. What should I not drink if I have elevated glucose levels in blood?

You should immediately avoid sugary beverages, followed by while flour carbohydrates and candies.

4. What should a diabetic individual eat in the morning?

A diabetic individual should eat a breakfast rich in fibre by including eggs, vegetables like spinach, mushrooms and peppers, along with walnuts or chia seeds.