I am a diabetic, and I do check my blood sugar fairly regularly. I usually get between 110 and 175, and occasionally it can be higher or lower. My doctor tells me that he does a blood test that checks sugar for 3 months, and that he thinks my blood sugar is running higher. My question is – how can he know what the blood sugar is?  Was it high on that blood test, and he is just guessing? What do you think?
While the doctor will check your blood sugar every time he sends the blood work and will know your sugar at that time, there is another blood test that measures how high the blood sugar had been for the few months prior to the blood test. This test is called a HgA1c, or a hemoglobin A1c, and it measures glycated hemoglobin, which occurs from sugar or glucose in the blood. When your blood sugar is too high over time, this HgA1c will be high. That is how your doctor knows this, and it is very accurate. So – listen to your doctor.
To learn more about the HgA1c test, watch this video from VideoMD.com.
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