I just got back from a 2 hour glucose tolerance test at the hospital. I did the 300 carb diet for 3 days and fasted for 10 hours. When I arrived my sugar was at 98. They didn't tell me the 1 hour number but the 2 hour number was 54!

Is it normal for it to drop so low after just 2 hours?
The reason I went waws to rule out diabetes because of numbness in my toes. We think it is my back but we did this test since I have a family history of diabetes- Juvenile-dad and 20 yes old onset -brother and nephew.

Do this numbers mean anything to anyone?

The OGTT is used to diagnose type 2 diabetes or the milder form of it, pre-diabetes. Normal fasting blood glucose is 70-90, and 100-125 indicates pre-diabetes. With your FBG of 98, you are getting close but you aren't quite there yet. And the OGTT result suggests reactive hypoglycemia. At the 2 hour mark, <140 is considered normal, 140-200 indicates pre-diabetes, and >200 is type 2 diabetes. Your blood glucose dropped to 54 after 2 hours, suggesting that your beta cells over-reacted to a blood glucose spike by producing too much insulin (which made your blood glucose drop).

T2 diabetes often starts this way, but many people who have reactive hypoglycemia never become T2 diabetics. You also could be in the very early stages of type 1 diabetes onset. As you have a family history of type 1 diabetes, you may want to rule this out by having the antibody tests done.

Thanks for the great info. The lab of course didn't say much about the results and I don't go back into the dr for a few weeks. Not sure if she'll just wait for my other tests or what. She;s a new dr for me so not sure how she works. But thanks again. I grew up with my dads diabetes but this is all still new info for me.

Shelby,

With one test, it's really hard to understand what's going on (for anyone btw, including any physician).

I recommend requesting and A1C test soon.
Get a decent home monitor and begin testing regularly and recording your results. Anthing regarding diabetes (and complications thereof) requires a good deal of data through time for you to design a path towards good health.

Keep us informed and good luck to you!
~ Mark