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Lab Test

Insulin- Fasting

Insulin is a hormone that is produced by beta cells in the pancreas. It plays a pivotal role in controlling blood glucose levels by allowing cells to take in glucose for energy. In some instances, the body’s cells may become resistant to insulin, or the pancreas may fail to produce sufficient insulin. Both scenarios lead to elevated blood glucose levels—a primary characteristic of diabetes. Thus, checking your insulin levels, particularly fasting insulin levels, is crucial for assessing your body's response to insulin and for identifying early signs of insulin resistance and diabetes.


  • Test NameInsulin- Fasting
  • Sample TypeBlood
  • Preparations RequiredOvernight fasting (8 to 12 hours) is necessary before this test. Please do not eat or drink anything except water during the fasting period.
  • Report Time4 Hours

The Fasting Insulin test measures the amount of insulin in your blood after an overnight fast. This test provides a snapshot of your insulin level without the influence of food intake, offering insight into how well your body regulates glucose when you are not eating. High levels of fasting insulin can be a sign of insulin resistance or type 2 diabetes, while low levels may indicate type 1 diabetes.

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Frequently Asked Questions

The Fasting Insulin test is vital to evaluate insulin resistance, a condition where the body's cells are not responding adequately to insulin, leading to high blood sugar levels. It also helps to assess the risk of developing diabetes and to monitor the effectiveness of diabetes treatment.

Yes, you need to fast for 8 to 12 hours before the test. This means no food or drinks other than water during this period to ensure accurate results.

If you have symptoms such as frequent urination, increased thirst, weight loss despite increased appetite, fatigue, blurred vision, or slow-healing wounds, your doctor may recommend a Fasting Insulin test. It can also be done if you have risk factors for diabetes like obesity, a family history of diabetes, high blood pressure, or high cholesterol levels.

The Fasting Insulin test measures the level of insulin, a hormone produced by the pancreas, in your blood after an overnight fast. The test provides information on how well your body regulates glucose when not influenced by food intake.

The frequency of testing depends on your health status, risk factors, and your doctor's recommendations. If you're at high risk for diabetes, have been diagnosed with prediabetes, or have a history of insulin resistance, your doctor may recommend regular testing.

Normal fasting insulin levels typically fall between 2.6 and 24.9 microU/mL. However, values can vary depending on the laboratory and test method used. Always discuss your results with your doctor.

Before the test, it's crucial to fast for 8 to 12 hours to ensure accurate results. After the test, you can return to your normal diet and activities immediately.

Certain medications, stress, illness, exercise, and dietary factors can affect insulin levels. Modifiable factors include diet, physical activity, and weight. Nonmodifiable factors include age, genetics, and underlying health conditions.

If your fasting insulin levels are abnormal, you should consult an endocrinologist, who specializes in diagnosing and treating conditions related to hormones and metabolic disorders like diabetes.

There are minimal risks associated with the Fasting Insulin test. You may experience a bit of pain or bruising at the site where the blood is drawn, but most symptoms go away quickly.

Yes, pregnancy can affect your fasting insulin levels. Pregnancy hormones can lead to insulin resistance, resulting in higher levels of insulin in the blood. This is normal, but in some cases, it could lead to gestational diabetes.

Yes, certain foods can affect your insulin levels. Foods high in carbohydrates, particularly refined and processed carbs, can cause a rapid increase in blood glucose and consequently a rise in insulin levels.

Chronic stress can impact the body's insulin needs. During stressful situations, hormones such as cortisol are released which can make your body less responsive to insulin.

The Fasting Insulin test isn't typically used alone to diagnose diabetes. It's often used in conjunction with other tests, such as the fasting glucose test, to provide a more comprehensive picture of a person's insulin function and blood sugar control.

Yes, regular physical activity can increase insulin sensitivity. This means your muscle cells can use the available insulin more effectively to absorb glucose and hence, less insulin is required, leading to lower insulin levels.

Certain factors can lead to elevated fasting insulin levels. These can include being overweight or obese, leading a sedentary lifestyle, having a diet high in processed or sugary foods, or having certain medical conditions, such as polycystic ovary syndrome (PCOS).

Yes, certain medications can affect your insulin levels. Corticosteroids, for instance, can increase insulin resistance and lead to higher insulin levels. Always inform your healthcare provider about any medications you are taking.

Fasting insulin levels refer to the amount of insulin in your blood when you have not eaten for at least eight hours. Postprandial insulin levels refer to the amount of insulin in your blood after eating. Both measurements can provide important information about your body's insulin sensitivity and pancreatic function.

Yes, weight loss, particularly a reduction in visceral fat (the fat that surrounds your internal organs), can help improve insulin sensitivity and reduce fasting insulin levels.

High fasting insulin levels may not cause noticeable symptoms. However, some people may experience symptoms associated with insulin resistance, such as fatigue, hunger, difficulty concentrating, weight gain, and high blood pressure.

Monitoring fasting insulin levels is an essential part of managing your health, especially if you are at risk of developing conditions like diabetes or metabolic syndrome. Regular testing can help identify problems early, making them easier to manage. Lifestyle modifications, such as adopting a healthy diet and regular exercise, can go a long way in maintaining healthy insulin levels and overall well-being. Always consult your healthcare provider for any health-related concerns.

INSULIN FASTING, SERUM
₹ 900
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