The A1C test measures a person’s average blood glucose or blood sugar levels over the past 3 months. An A1C reading of over 5.6% may be a cause for concern, but this will depend on various factors.

Blood glucose levels vary, depending on a person’s health status and whether they have eaten. People without diabetes typically have between 72–140 milligrams of glucose per 1 deciliter of blood.

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I reassured him and sent him to get another blood specimen drawn without a tourniquet. Why? Because I suspected that the ...