What are the normal fasting plasma glucose levels?

Normal: 70–100 mg/dL Prediabetes: 101–125 mg/dL Diabetes: ≥126 mg/dL

What do high results indicate?

High results may indicate diabetes, insulin resistance, or other blood sugar disorders.

Are there any side effects from the test?

The test is generally safe, though some people may feel mild pain or bruising at the blood draw site.

How long does it take to get results?

Usually within hours to two days, depending on the laboratory.

What should I do if results are abnormal?

Consult a doctor to determine possible causes and discuss treatment or additional tests if needed.

Can I take medications before the test?

Consult your doctor, as some medications may affect the results.

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Control Your Fasting Sugar

Fasting Plasma Glucose Test

Accurate fasting glucose test to diagnose diabetes and monitor sugar levels, helping you maintain a healthy, safe lifestyle and prevent complications.

Trusted medical contentUpdated: 25-04-2026Views: 41LHL-62

About this service

Glucose in Plasma (Fasting) is a test conducted to measure the level of glucose in the blood after fasting for 8 to 12 hours. A blood sample is drawn from a vein, and this sample is used to determine the glucose level in the plasma. This test is essential for diagnosing and monitoring diabetes, as it helps evaluate how the body responds to glucose. It is recommended for individuals showing symptoms of diabetes or those at risk, such as those with obesity or a family history of diabetes. Normal fasting plasma glucose levels typically range from 70 to 100 mg/dL, and a level above 126 mg/dL is considered a sign of diabetes.

Purpose Test

Diabetes diagnosis: This test helps determine whether a person has diabetes or prediabetes, as elevated glucose levels indicate a potential condition.
Blood sugar monitoring: It is used to follow up with individuals who have diabetes and to assess the effectiveness of treatment or lifestyle changes.
Identifying insulin resistance: Abnormal levels may indicate insulin resistance, a condition that can lead to high blood sugar levels.
Detecting other conditions: The test can also help identify other health issues, such as hyperglycemia or endocrine disorders.

Recommended groups

Individuals at risk for diabetes: Such as those with obesity, high blood pressure, or high cholesterol levels.
Family history of diabetes: People who have a parent or sibling diagnosed with diabetes.
Individuals with symptoms of diabetes: Such as excessive thirst, frequent urination, unexplained weight loss, or fatigue.
Pregnant women: The test is recommended as part of pregnancy monitoring to detect gestational diabetes.
Individuals with chronic medical conditions: Such as endocrine disorders or heart disease, who may have a higher risk of blood sugar regulation issues.
People taking medications that may affect blood sugar: Certain drugs can influence glucose levels.
Individuals with polycystic ovary syndrome (PCOS): This condition is linked to insulin resistance and an increased risk of diabetes.

Symptoms indicative

Excessive thirst: Persistent thirst even after drinking fluids.
Frequent urination: Increased urination, especially at night.
Unexplained weight loss: Sudden or unexplained weight loss without dieting.
Fatigue and weakness: Feeling constantly tired or generally weak.
Blurred vision: Changes in vision, such as blurriness or unclear vision.
Excessive hunger: Constant hunger despite eating.
Slow-healing wounds or bruises: Wounds or bruises that take a long time to heal.
Itching or recurrent infections: Unexplained itching or repeated infections, especially in specific areas of the body.

Normal Levels

Normal levels: 70–99 mg/dL This range is considered normal and indicates proper blood sugar regulation.
Elevated levels (Prediabetes): 100–125 mg/dL This range indicates prediabetes and an increased risk of developing diabetes in the future.
Abnormal levels (Potential Diabetes): ≥126 mg/dL This value suggests a possible diagnosis of diabetes and should be confirmed with an additional test.
Normal ranges may vary slightly depending on the laboratory or testing method.
It is essential to review results with a healthcare professional to interpret them based on overall health and medical history.

Frequently Asked Questions

Short answers to the FAQs published with this service.

What is the fasting plasma glucose test?

It is a test used to measure blood glucose levels after fasting for 8–12 hours, commonly used to diagnose and monitor diabetes.

How is the test performed?

A blood sample is drawn from a vein and sent to the laboratory to measure glucose levels.

Is fasting required for the test?

Yes, fasting for 8–12 hours before the test is required.

What should I do before the test?

Avoid food and drinks except water. Avoid alcohol and medications that may affect test results, after consulting your doctor.

Control Your Fasting Sugar

About this service

Purpose Test

Recommended groups

Symptoms indicative

Normal Levels

What is included?

Conditions and notices

Frequently Asked Questions

References and additional resources

Scientific references

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