Blood Glucose Fasting

Also Know as: Fasting Plasma Glucose Test, FBS, Fasting Blood Glucose Test (FBG), Glucose Fasting Test


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Last Updated 1 May 2024


About Blood Glucose Fasting Test

The Blood Glucose Fasting Test is a simple blood test that is done to measure your blood sugar levels after fasting for a certain time period. Here's what you need to know about this test:

  1. Purpose: The test helps your doctor assess how well your body regulates sugar levels. It's commonly used to diagnose diabetes or monitor blood sugar control in people with diabetes.

  2. Preparation: You'll need to fast for at least 8 hours before the test, usually overnight. During this time, you can't eat or drink anything except water.

  3. Procedure: A healthcare professional will draw a small sample of your blood, typically from a vein in your arm. The sample is then sent to a laboratory for analysis.

  4. Interpretation: The results of the test show your blood sugar levels. Normal fasting blood sugar levels are typically between 70 and 100 milligrams per deciliter (mg/dL). Higher levels may indicate prediabetes or diabetes.

  5. Follow-Up: Depending on the results, your doctor may recommend further testing or treatment, such as lifestyle changes, medication, or additional monitoring.

Overall, the Blood Glucose Fasting Test is a valuable tool for assessing blood sugar levels and diagnosing or managing diabetes. It's important to follow your doctor's instructions and discuss any concerns or questions you have about the test or its results.


When is the Blood Glucose Fasting Test Prescribed?

Your doctor might suggest a Blood Glucose Fasting Test for different reasons, like:

  1. Diabetes Check: As a regular check for diabetes or prediabetes.

  2. Diabetes Monitoring: If you already have diabetes, doing this test regularly helps manage your blood sugar levels.

  3. Risk Check: If you have higher risks (like family history of diabetes, being overweight, or not being very active), this test helps identify issues early.

  4. Hyperglycemia Symptoms: If you notice signs like excessive thirst, frequent peeing, sudden weight loss, or blurred vision.


When Should I Take the Blood Glucose Fasting Test?

To better understand an individual's metabolic health, healthcare providers may suggest a Complete Blood Picture (CBP) test in addition to the Blood Glucose Fasting Test. The CBP test covers various parameters such as red and white blood cell counts, hemoglobin levels, and platelet counts, providing a comprehensive view of overall well-being. Combining the results of the CBP test with fasting blood sugar (FBS) results allows for a more thorough assessment of potential underlying health conditions, including diabetes and related complications.

How to Prepare for the Blood Glucose Fasting Test?

Specific preparations are required for the Blood Glucose Fasting Test: Fasting: Restrict yourself to consume only water for at least 8 hours before the test. Medication Adjustments: Follow any instructions from your healthcare provider regarding adjustments to diabetes medications or other relevant prescriptions.


What Will Happen During the Blood Glucose Fasting Test?

  1. Preparation: Before the test, you need to fast overnight for about 8 hours. This ensures that the collected blood sample accurately reflects your baseline, non-after-meal glucose levels. Following this fasting period is essential for accurate test results.

  2. Blood Sample Collection: A trained healthcare professional, like a phlebotomist or nurse, will collect the blood sample. This is usually done from a vein in your arm, often in the inner elbow area. They'll clean the area with an antiseptic solution.

  3. Needle Insertion: A thin needle attached to a syringe, or a vacuum tube will be gently inserted into the vein. You might feel a slight prick or discomfort, but it's usually brief. Modern needles are designed to minimize discomfort during blood collection.

  4. Blood Collection: The healthcare professional will draw some blood into the syringe or vacuum tube. The process is quick, usually taking only a few minutes.

  5. Post-Procedure: After collecting the blood sample, they'll apply a cotton ball or sterile dressing to the puncture site to prevent bleeding. You can go back to your regular activities after the test.

  6. Laboratory Analysis: The collected blood sample is sent to the lab for analysis. There, they process the blood to measure the glucose concentration.

Normal Range of Blood Glucose Fasting Test?

The normal fasting blood sugar level typically falls within a specific range, providing a baseline for assessing an individual's metabolic health. On average, the normal fasting blood sugar level ranges between 70 and 100 mg/dL. This range is considered optimal for adults, reflecting a balance in glucose metabolism during periods of fasting.

Causes of High Blood Glucose Fasting Test

The test results indicate an individual's current glucose status at the time of testing. Elevated results may suggest diabetes or prediabetes, prompting further investigation. Normal results don't necessarily rule out diabetes, and additional tests may be considered based on overall health.

People taking this test should inform their healthcare providers about their medical history, medications, and pre-existing conditions. Some medications can influence results, and a comprehensive understanding helps healthcare professionals interpret findings accurately.

How to Maintain Healthy Blood Glucose Levels?

1. Balanced Diet:

  • Embrace a diverse and nutrient-rich diet comprising whole grains, fruits, vegetables, and lean proteins.
  • Opt for complex carbohydrates to promote gradual glucose release, sustaining energy levels.
  • Monitor portion sizes and practice mindful eating to avoid unnecessary spikes in blood sugar.

2. Regular Physical Activity:

  • Integrate regular exercise into your routine to support effective blood glucose regulation.
  • Engage in a mix of aerobic activities (like walking or jogging) and strength training to enhance insulin sensitivity.
  • Consult a healthcare professional to make an exercise plan that suits your individual needs and preferences.

3. Weight Management:

  • Maintain a healthy weight with a combination of a balanced diet and regular physical activity.
  • Focus on gradual, sustainable weight loss if necessary, as excess body weight contributes to insulin resistance.
  • Seek guidance from healthcare professionals or nutritionists for personalized weight management strategies.

4. Regular Monitoring:

  • For individuals with diabetes, prioritize consistent monitoring of blood glucose levels.
  • Follow healthcare professionals' recommendations, which may include self-monitoring using devices.
  • Regular monitoring aids in understanding how lifestyle choices, dietary habits, and medications impact blood glucose levels.
  • Collaborate closely with healthcare providers to make informed decisions and adjustments to your management plan based on monitoring results.

At Bajaj Finserv Health, we are dedicated to supporting your well-being and providing comprehensive healthcare services.

Benefits of Maintaining Normal Blood Glucose Levels.

In addition to fasting blood sugar tests, random blood sugar tests are conducted without regard to meals. The normal range for random blood sugar levels typically falls between 70 and 140 mg/dL. Monitoring both fasting and random blood sugar levels provides a comprehensive assessment of glucose metabolism.

Regular monitoring of fasting blood sugar levels is fundamental in preventing and managing metabolic disorders. The FBS test, along with understanding normal ranges and averages, empowers individuals and healthcare professionals to make informed decisions for maintaining optimal health.

How to Schedule a Blood Glucose Fasting Test with Bajaj Finserv Health?

Scheduling a Blood Glucose Fasting Test with Bajaj Finserv Health is a straightforward process:

  1. Visit our website.

  2. Select the 'Book a Test' option.

  3. Choose 'Blood Glucose Fasting Test.'

  4. Specify your preferred laboratory, location, and appointment time.

  5. Opt for either 'Lab Visit' or 'Home Sample Collection.'

  6. Complete the payment process to confirm your booking.

Blood Glucose Fasting Test Price in India

The price of the Blood Glucose Fasting Test in India can change based on the location, the healthcare provider or laboratory, and any additional services included in the test. Here's what you need to know about the cost of this test:


The Blood Glucose Fasting Test is a crucial tool for checking an individual's blood sugar levels after an 8-hour fasting period. This test helps detect and manage diabetes while assessing overall metabolic health. Fasting before the test is vital because it establishes a baseline measurement unaffected by recent eating. This ensures accurate and reliable results. Eating or drinking during the fasting period can raise glucose levels, affecting the test's precision.

Frequently Asked Questions

How to Maintain Normal Blood Glucose Fasting Levels?

Maintaining normal blood glucose fasting levels can be achieved by consuming a balanced diet, regular physical activity, and medication if required. It's also important to keep your body weight under control. Regular blood glucose monitoring can help you understand how food, exercise, and medication affect your glucose levels.

What Factors Can Influence Blood Glucose Fasting Test Results?

Several factors can influence your blood glucose fasting test results, including the timing of your last meal, stress, illness, certain medications, and how physically active you are. Women may also notice fluctuation in blood glucose levels during their menstrual cycle.

How Often Should I Get the Blood Glucose Fasting Test Done?

Your doctor will advise how often you should have a blood glucose fasting test, but generally, if you have diabetes, get your blood glucose levels tested before meals and at bedtime. If you are pre-diabetic, you should have this test once a year.

What Other Diagnostic Tests are Available?

Other than the blood glucose fasting test, there are other diagnostic tests such as the Hemoglobin A1c test that show your average blood glucose levels over the past 3 months. The Oral Glucose Tolerance Test (OGTT) is also used to diagnose pre-diabetes and diabetes.

What are Blood Glucose Fasting Test Price?

The price of a Blood Glucose Fasting test can vary depending on the location and laboratory. It's best to check with your local laboratory for exact prices or your insurance provider if you're covered.

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Things you should know

Fasting Required8-12 hours fasting is mandatory Hours
Recommended ForMale, Female
Common NameFasting Plasma Glucose Test
Discount5% Off

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