Glucose Test

The glucose test (FBS test) measures the blood glucose level.

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Glucose Test FAQ

What is a Glucose Test?

The Glucose test measures the blood level of Glucose.

Why is a Glucose Test important?

Blood glucose, also known as blood sugar, varies during the day. Many practitioners use the blood glucose test as a screening test for diabetes. An elevated blood glucose level is suggestive of diabetes.

What type of specimen will I submit?

This Glucose Test is a blood test.

Do I need to fast to take this test?

An 8-12 hour fast is recommended before testing.

How long does it take to get test results?

It typically takes 4 business days or less.

Accesa Labs does not provide medical advice, diagnosis or treatment. All users should consult with a medical provider for specific health concerns.

Last updated on January 19, 2018

Glucose Test for $29

Glucose Blood Test - More Information

The glucose test, also known as a fasting blood sugar test and an FBS lab test, measures the glucose blood level.

The glucose test is a core test in screening for diabetes. It is sometimes known as an FBS blood test because it is usually performed after an 8-hour overnight fast. The glucose blood level is frequently used by diabetics to manage their medications and by people in general who want a basic screen for diabetes.

Technological innovations over time have made the blood glucose test more accessible by allowing people to check their blood glucose levels using a home device called a glucose meter and a drop of blood from one's finger. However, some people prefer to get their glucose test done at a lab to avoid user error or because they want to test other markers such as their hemoglobin A1c level concurrently (all part of the diabetes screening panel).

While the glucose blood test is a useful screening tool, it does represent one's glucose level at only one point in time. As a result, the glucose test result cannot tell if one's glucose is spiking throughout the day but happened to be normal at the time of testing. Fortunately, other lab markers can help clarify what is happening to the blood sugar level at other times. The hemoglobin A1c and fructosamine tests can give one a better picture of the average blood sugar over different periods of time. For even more data, the newer GlycoMark test was designed specifically to help assess glycemic variability and the tightness of blood sugar control over time. The glucose test also plays a role in other tests. For example, the blood glucose level is measured as part of the glucose tolerance test during which an oral solution is administered and blood glucose levels are measured to understand how quickly the body can clear glucose out of the bloodstream.

To get a glucose test near you at a Quest Diagnostics lab, simply order online and get your blood drawn at your selected lab. Once the glucose lab results are ready, they will be available for download. As can be seen on the sample glucose lab report above, the blood glucose level will be reported as a number and can be compared against the reference range provided by the lab. Additionally, many people track their glucose blood levels over time, particularly if getting glucose lab testing in the setting of diabetes.

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