Can eating no sugar for 5 days affect GTT?

Question

I am 29 weeks pregnant and I recently took the 3 hour GTT and passed, but I also had stopped eating sugar about 5 days before I took the GTT when I found out that I had failed the first glucose test. My doctor didn't give me a specific diet to follow before the GTT, just told me to fast for 10 hours before the test. Do you think this could have affected the results of my glucose tolerance test and should I tell my doctor?

Answer 1

YES. This could give you a false reading on your GTT. Eat as you normally would and fast TEN HOURS BEFORE THE TEST.  Tell your doctor just to be safe.

The only reason you "passed" the first test is because you dramatically altered your eating habits and took out all the sugar from your diet. This is dangerous because you could have Type I, II, or gestational diabetes and you are putting yourself and your baby at risk.

Here's hoping all goes well.

Answer 2

i dont kno wat GTT is but i kno having no sugar can affect the way ur body works somehow

Answer 3

It's not just sugar that effects blood glucose, just about all foods do in some way. Everything you eat turns into sugar before your body can digest and process it. Some foods turn into a lot more sugar than others eg. pasta, potato, breads, some cereals (anything with high carbohydrates) and other foods turn into a small amount of sugar, so they're best to have when you have blood glucose problems. Most green vegetables are classed as "free foods" because they have very little "sugar" value and therefore don't affect glucose levels very much.

The sudden change in your diet would probably have affected the test, and it's best you tell your doctor so he/she doesn't get the wrong impression and misdiagnose you in any way.

If you're having problems, try and keep your carbohydrates limited, as well as artificial sugars. Congratulations on the baby and good luck for the future!

Answer 4

No.

The Glucose Tolerance Test (GTT) tells you how your body handles a large input of glucose (that sweet liquid you drink).  It generates a "spike", and the doctor measure how long it takes for the spike to drop to normal.

But you didn't tell us what the FIRST "glucose test" was.  Did he just stick you finger then read the blood on a meter?  That is a "finger stick" test, and just tells him that your readings were high AT THE MOMENT HE TOOK THE TEST.  That test IS affected by how much sugar you ate before you took the test.  That is only a gross indicator of your condition, and that is probably why he took the GTT.

You may have Gestational Diabetes.  It is quite a complex "aninmal", and it is not unusual for a pregnant woman to fail then pass, or pass then fail, the GTT.

You SHOULD, though, tell you doctor what you did.  It might change his mind about the first reading.

He should also take an A1C test to check your 90 day avarage.  This, along with the GTT, will give him a better picture of what's going on.

And you should continue to stop eating sugar, at least until after your delivery.

Answer 5

GTT  are done to check your blood sugar levels, if you stop eating sugar you have to also stop all carbohydrates which turn into sugar so I would say no, I worked in  the lab and we did these all the time, just becareful while your pregnant not to go overboard with sweets, have fun