One time I accidentally ate a snack before a blood test. They called me and asked if I ate and I remembered I did. They said my sugar was spiked, but can tell through that it’s not normally like that because of some three month marker. I may be repeating that completely wrong, but how is it possible to see that your sugar isn’t normally high and just acutely through blood? I only get annual physicals, so it’s not like I had a blood test 3 months prior.
In: Biology
There are a few different blood sugar tests.
1. A regular blood sugar test: checks how much sugar in in your blood at the moment the test is taken.
2. A fasting blood sugar test: allows a spot check to see how much sugar is still in your blood after fasting for at least eight hours. The higher the number the more concern about possible diabetes.
3. A1C: looks at how much sugar has bonded with hemoglobin over the past three or so months. The higher your A1C, the higher your average blood sugars.
From your answer, they have have tested both your (supposed) fasting blood sugar and A1C. Because you didn’t fast, your blood sugar was higher than expected but your A1C showed a normal blood sugar range.
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