Starting an exercise program can help. Prediabetes can progress to diabetes. You may also need to make other lifestyle changes and monitor your daily blood glucose more closely. Talk with your doctor about the best treatment plan for you. The A1C test measures the amount of hemoglobin in the blood that has glucose attached to it. The test provides an average of your blood sugar readings for the past 3 months. People with diabetes should take an A1C test at least twice a year and more frequently in some cases.
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Self-monitoring helps you make choices about diet and exercise and daily treatment goals, but it also helps you track whether you are meeting your A1C target. The most common form of the oxygen-transporting hemoglobin protein is called hemoglobin A. The presence of other variants of the protein may result in inaccurate A1C test results.
Hemoglobin variants are more common among people of African, Mediterranean or Southeast Asian descent. If you have a hemoglobin variant, your test may need to be sent to a specialized lab or you may need a different test for diagnosis and monitoring of diabetes. Explore Mayo Clinic studies of tests and procedures to help prevent, detect, treat or manage conditions.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Sections for A1C test About. Overview The A1C test is a common blood test used to diagnose type 1 and type 2 diabetes. The NGSP provides information for health care professionals about which A1C tests are appropriate to use for specific hemoglobin variants.
Read about diabetes blood tests for people of African, Mediterranean, or Southeast Asian descent. Even when the same blood sample is repeatedly measured in the same lab, the results may vary because of small changes in temperature, equipment, or sample handling. Health care professionals understand these variations and repeat lab tests for confirmation. Diabetes develops over time, so even with variations in test results, health care professionals can tell when overall blood glucose levels are becoming too high.
When repeated, the A1C test result can be slightly higher or lower than the first measurement. This means, for example, an A1C reported as 6. Health care professionals can visit www. Your health care professional may use the A1C test to set your treatment goals, modify therapy, and monitor your diabetes management. Experts recommend that people with diabetes have an A1C test at least twice a year.
People will have different A1C targets, depending on their diabetes history and their general health. You should discuss your A1C target with your health care professional. Studies have shown that some people with diabetes can reduce the risk of diabetes complications by keeping A1C levels below 7 percent. Managing blood glucose early in the course of diabetes may provide benefits for many years to come.
However, an A1C level that is safe for one person may not be safe for another. For example, keeping an A1C level below 7 percent may not be safe if it leads to problems with hypoglycemia , also called low blood glucose. Less strict blood glucose control, or an A1C between 7 and 8 percent—or even higher in some circumstances—may be appropriate in people who have. Estimated average glucose eAG is calculated from your A1C.
Some laboratories report eAG with A1C test results. The eAG number helps you relate your A1C to daily glucose monitoring levels. Even though A1C results represent a long-term average, blood glucose levels within the past 30 days have a greater effect on the A1C reading than those in previous months.
Clinical trials are part of clinical research and at the heart of all medical advances. Clinical trials look at new ways to prevent, detect, or treat disease. Scientists are conducting research to learn more about diabetes, including studies about A1C.
However, because you are more likely to check your blood sugar in the morning and before meals, your meter readings will likely be lower than your eAG.
Log in menu Manage Account Search. Donate now. Understanding A1C. Understanding A1C A1C does it all. The big picture: monitoring treatment This relatively simple blood test can tell you a lot.
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