Hemoglobin A1c Test
Hemoglobin A1c Test FAQ
What is a Hemoglobin A1c Test?
Why is a Hemoglobin A1c Test important?
What does an abnormal Hemoglobin A1c Test mean?
What type of specimen will I submit?
Do I need to fast to take this test?
How long does it take to get test results?
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Related To The Hemoglobin A1c Test
Hemoglobin A1c Test - More Information
The hemoglobin A1c test measures the blood level of hemoglobin A1c. The hemoglobin A1c test is also known as an HbA1c test, glycosylated hemoglobin test, glycated hemoglobin test, glycohemoglobin, or, simply, an A1c test.
The hemoglobin A1c helps assess how well the blood glucose level in the body. Hemoglobin, a blood protein in red blood cells, will bind some glucose when they are found together in the blood. If the blood glucose level is high, more of it will be bound to the hemoglobin and the level of this bound hemoglobin can be measured by the HbA1c test.
Because red blood cells only last for several months, the hemoglobin A1c test can assess the average glucose level over the past three months. It is helpful to remember that hemoglobin A1c does not play a role in managing glucose levels like blood insulin and adiponectin do.
One limitation of the hemoglobin A1c test is that it measures the average blood glucose levels over the past few months but cannot determine how many times the blood glucose levels spiked above normal during that period (so-called glycemic variability). Newer tests such as the GlycoMark test are more helpful is assessing glycemic variability in known diabetics who want tighter blood glucose control.
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