HbA1c Test Health Information

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HbA1c Test Health Information

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About Hemoglobin A1c, Part 2

Studies show a relationship between your HbA1c result and your blood glucose test results. The chart below shows the approximate relationship between the two tests.
HbA1c % Mean Blood Glucose
(mg/dl)		 Average Plasma Glucose
(mg/dl)		 Interpretation
4 61 65 Non-Diabetic Range
5 92 100
6 124 135
7 156 170 Target for Diabetes in Control
8 188 205 Action Suggested according to ADA guidelines
9 219 240
10 251 275
11 283 310
12 314 345

Test Frequency and Other Tests
You should get an HbA1c test at least two times a year if your blood sugar is in the target range and stable. If you are taking insulin, if your treatment changes or your blood sugar stays too high, you should get the HbA1c test at least every 3 months until your blood sugar level improves. Since about 50% of the HbA1c result is from the last 30 days, your physician may wish to perform the test more frequently to check the effect of any "conntreatment" changes.


In addition to HbA1c and daily blood glucose testing, other important tests for diabetes care include: dilated eye exam, foot examination, blood pressure, kidney function (Microalbumin test), and lipid profile. Be sure to ask your physician about all of these tests.

Back: About Hemoglobin A1c, Part 1 Next: Blood Testing
Testing HbA1c LevelsTesting HbA1c Levels

While daily blood glucose testing tells you what your blood sugar level is at the time you test, HbA1c testing tells you your average blood sugar level over the past 2–3 months. These tests are very important in protecting your long-term health.