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Doctor insights on: Hemoglobin A1c Chart

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What is hemoglobin a1c?

What is hemoglobin a1c?

Average blood sugar: Hemoglobin A1c is a measure of the percentage of red blood cells permanently bound to glucose. Normally about 5% of our red cells are glycosolated. If you have greater than 6.5% you are diabetic. It is not affected by fasting, and since our rbc's live 90-120 days, it reflects an average over that time. ...Read more

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Dr. Ira Katz
495 doctors shared insights

Hemoglobin A1c (Definition)

It helps determine the average blood sugar over a long period of time, about 2 or ...Read more


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Looking for hemoglobin A1c advice?

Hemoglobin A1C: This is a rough estimate of average blood sugar control over a three month period, more accurate than a single fasting blood glucose (sugar) level. In many tests, greater than 5.9 is considered abnormal, but you should discuss risk factors and prevention of diabetes with your doctor. ...Read more

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What's a hemoglobin A1c level for ?

What's a hemoglobin A1c level for ?

Average glucose: The hba1c reflects that average blood glucose over the preceding three months. ...Read more

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Do you fast for a hemoglobin A1c test?

Do you fast for a hemoglobin A1c test?

Short answer: The test measures indirectly measures glucose control over the preceding 6-8 weeks. It does not measure sugar directly; therefore i would believe it not to be necessary to fast prior to the test. However, the best way to answer this question is to call the lab where you go to have the blood drawn and ask them directly whether you need to fast for the test. ...Read more

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Why do I need to know my hemoglobin a1c?

Why do I need to know my hemoglobin a1c?

Risk increase: When the hga1c as it is commonly called, becomes uncontrolled (higher than 7.0%) the rate of retinopathy increases. The duration of uncontrol and level of uncontrol both play a factor. ...Read more

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How can I lower my hemoglobin A1c levels?

How can I lower my hemoglobin A1c levels?

Improve blood sugar: The way to improve your hga1c is to improve your average blood sugar. Work to keep your fasting blood sugars near normal and watch your diet carefully so that the rise in blood sugar after a meal is not too high. ...Read more

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What can cause a high hemoglobin A1c test?

Poor sugar control: Hemoglobin A1c measures average blood sugar over approximately the past 3 months. It is the measure of how much hemoglobin is attached to sugar molecules in the blood. Sugar in your blood binds to the hemoglobin of the red blood cell and stays there throughout the cell's lifetime (120 days). At high levels of blood sugar, more reacts w/ the hemoglobin, causing an elevated hemoglobin a1c. ...Read more

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Hemoglobin A1c level is 8.4--is this safe?

Hemoglobin A1c level is 8.4--is this safe?

Diabetes.: A HgbA1C of 8.4 suggests you have diabetes which is not well controlled, and therefore you are at risk for long-term diabetic complications. It needs to be lowered, ideally below 6.5% ...Read more

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Do you have to fast for hemoglobin A1c test?

Do you have to fast for hemoglobin A1c test?

No: For hba1c alone, no fasting is required, but it is often done with other tests, like cholesterol or blood sugar, for which fasting is indicated. ...Read more

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