Q&A Diabetes » Diabetes Info » glucose tolerance test

glucose tolerance test

A: Sugar in your blood does not appear from nowhere, it comes from what you eat.
If you have sugar in your blood when you’ve fasted, then it is because your body does not utilize it correctly.

Now, because your brother has eaten when he should have fasted, it looks like his body does not use the sugars correctly.

The whole test MUST be repeated. (unless there were at least 3 hours between the eating and the test)

If your brother is unable to fast correctly, he should then ask to get the Glycosylated hemoglobin test. (HbA1c or HA1c) This test shows your blood glucose level history of the previous eight to twelve weeks. It measures your average blood glucose levels over the past two to three months.

Q: Can taking Glucosamine daily affect the results of a blood glucose tolerance test?
When going for a glucose tolerance test, should I avoid taking Glucosamine before the test? If so, how long beforehand?

A: i have friend, diabetic, severe arthritise. he took that i saw no imporvement, not saying you wont. it is expensive and i perseve to be a waste but any drug can be detected in any test, even asprin.. good luck

Q: Question about my results after taking a glucose tolerance test?
Ok, I was diagnosed as a type 2 diabetic this morning. He said that during my 2 hour glucose test my sugar was 149. Is this considered diabetic? He has me on metformin now. Just reading the stuff on the internet confuses me. I keep seeing anything over 200 at tolerance test is considered diabetic but he has diagnosed me with this at 149. Is it safe to just take the metformin?
I have so many questions and no answers..

A: Metformin is mainly a drug to help your body handle glucose… don’t ever think that it will allow you to continue the lifestyle that got you here. You are “pre-diabetic” or “borderline”. In other words, you’re in that gray area between 140 and 200. Look up “impaired glucose tolerance” or “insulin resistance” for more on that. You’re going to find in subsequent years, that diet and exercise are far more effective than even the maximum dose of Metformin. I was on it for years. It wasn’t until I researched and discovered the best possible diet to lower my insulin resistance and began to exercise regularly, that I was able to discontinue the Metformin. That was a year and a half ago.

Q: Can you really not drink anything before a glucose tolerance test?
I have a glucose tolerance test in 3 hours for hestational diabetes since i am 25 weeks pregnant but i am so thirsty for some water. Would it hurt me to drink some water?

A: No, you cannot drink but after the test you can drink.

Q: For the 3 hour Glucose Tolerance test, do they prick your skin or withdraw?
I have to get normal bloodwork done. After that, I have to get the 3 hour glucose tolerance test done. Do they withdraw your blood every 3 hours like regular bloodwork or do they just prick your skin?

A: Hello,
When I had the test done yes they just poked my finger and I also had to give them a urine sample.
Good Luck with your test.

Q: Do you have to fast for the Glucose Tolerance Test during your pregnancy?
Do you have to fast for the Glucose Tolerance Test during your pregnancy? I am 29 weeks and am due for my test, just wanted to know if I had to fast or not. I would call the lab but its Sunday night and they are closed.

A: they told me not to eat or drink anything for a couple hours before my test. i did the one hour test, may be different for the three hour test though. then you have to wait an hour after you drink the stuff so they can draw your blood. then you can get something to eat and drink. its not that bad at all. it just made me tired. lol. also made the baby move LOTS. haha. good luck.

Q: What can I do to make my glucose tolerance test easy tomorrow?
Until I was of the age 19, I was great w/having blood taken and getting shots. I donated plasma a few times bc I needed $.. and the last time ruined me for life.

The woman didn’t put it in my vein completely, the needle came out and blood spilled out underneath my skin. This left my entire upper arm black/blue and sore for 2 wks.

Tomorrow I have a Glucose Tolerance Test where they take blood for 3 hours. I know they can’t sedate me and I’m not sure I can do it. Any way at all I can make it easier?

A: How is the screening test done?
When you arrive for the test, you’ll be given a sugar solution that contains 50 grams of glucose. The stuff tastes like a very sweet soda pop (it comes in cola, orange, or lime flavor), and you have to get all of it down in five minutes. Some centers keep it chilled or let you pour it over ice and drink it cold.

An hour later (bring a book or magazine!), your practitioner or a technician will take a blood sample from your arm to check your blood sugar level. The idea is to see how efficiently your body processes sugar. Results should be available in a few days.

If the reading is abnormal (too high), which happens 15 to 23 percent of the time, your practitioner will have you come back for a three-hour glucose tolerance test to see if you really do have gestational diabetes. The good news is that most women whose screening test shows elevated blood sugar don’t turn out to have gestational diabetes.

Will this test make me feel sick?
Some moms-to-be feel nauseated after drinking the glucose solution, and a few even throw up. It sometimes helps to have eaten something a few hours before the screening test. If you vomit soon after you’ve gotten the drink down, you’ll have to come back another day and repeat the test. But most women get through it just fine. It’s actually more common for women to feel sick during the three-hour glucose tolerance test, because the solution for that test may be twice as sweet or twice as much liquid as the one for the screening test and you have to drink it after fasting.

im a nurse. give the nurse 2 chances to draw blood. if she misses, get another better nurse.

Q: How did you feel after you had your Glucose tolerance test?
I had my glucose tolerance test today at 28 weeks..The drink was nasty and I felt so dizzy afterwards, I was just wondering how you ladies did?
I had horrible heartburn after words too. And I wasn’t allowed to drink anything after I took the drink…It was horrible..I wanted to puke

A: That drink is nasty. I felt weak, I was shaky, I could not get rid of the heartburn after wards. What helped me was to eat pasta and to drink plenty of water.

Q: Can I have Diet Coke before a glucose tolerance test?
I have a glucose tolerance test in the morning. It takes quite a while and I can’t have my morning latte, which is going to leave me with a raging headache.

It’s it OK to have plain black coffee or Diet Coke in the morning, or will that screw the test up?
The testing facility closed at 1 PM.

A: no you need to fast only drink water. you want an accurate reading. trust me if you can pass this test it would be good.

Q: Can you opt for finger pricks instead of blood draws for your 3hr glucose tolerance test?
Hello ladies.
I failed my 1 hr glucose tolerance test.
So now I have to do the crappy 3 hr one.
I was wondering if anyone knew if I could opt to get my blood sugar levels through finger pricks instead of blood draws at the lab.
Obviously I will ask the lab when I make my appointment, but was just curious if anyone else did this.
I have a REAL problem with needles and even made my Husband cry when I had my first blood draw.

A: no…..suck it up! blood draws do not hurt and more than a finger prick.

Q: How long does the glucose tolerance test take??
I am currently 29 weeks pregnant and I need to take my glucose tolerance test tomorrow morning. Well I should know already how long it takes because this is not my first pregnancy, but it’s been awhile and I’ve forgotten. I know you go and drink the glucose drink…..but how long do you have to wait until they draw your blood???

A: I’m sure they will just have you do the 1 hour test, drink the stuff then wait an hour and they draw the blood and boom, done. if they didn’t like the test result, they will call you back to do the 3 hour test fasting. good luck, that stuff is nasty, I just had to do it too!

Q: What did you have to drink during your Glucose Tolerance Test?
I am 28 weeks pregnant and have my glucose test tomorrow (1 hour), my stomach is pretty sensitive these days and i was wondering what they gave you to drink during it? Also did you have to fast before? Thanks :)

A: its like orange soda.. dont worry it doesnt taste bad :) good luck*

Q: Are my results normal on my glucose tolerance test?
I did a glucose tolerance test today and am waiting to hear back from my doctor but am curious about my results.

Fasting – 88
1 hr.- 168
2 hr.- 74

The drink made me miserable. I even threw up after 30 minutes.
I forgot to mention that I drank the 75 gram drink.

A: Oral glucose tolerance test
This test measures your response to sugar. First we measure fasting blood glucose level, and then glucose solution is given, after that we measure blood glucose after 1 hour and 2hours. A normal blood glucose level after an oral glucose tolerance test is less than 140 mg/dL. Level between 140 mg/dL to 199 mg/dL suggests pre-diabetes. A blood glucose level of 200 mg/dL or higher two hours after you drink the glucose solution may suggest that you have diabetes mellitus.

And now you know>

Q: Failed to the first glucose tolerance test?
I did my glucose tolerance test last Sat, and got the result yesterday that I failed the test. I got the result detail from the hospital but there are some descriptions I don’t understand. I am high in Glucose, 1hr/50gm and MCH, but low in RBC Count, Hemoglobin, and Hematocrit. What are they and what do they function during the preganacy?

A: You should not be alarmed by failing the first glucose test. They will adminster a longer version and thendecide what your course of treatment should be. I failed ALL 4 of my first ones, but turned out borderline on the longer tests, so they put me on a glucose monitor and a diabetic diet. (If your flunk the long test, you will monitor and take pills and/or shots to control your insulin levels)

I owuld be more concerned with the other results of that bloodwork. You need some iron girl! Talk to your doctor.

Q: Anyone else get deathly sick after glucose tolerance test?
So, I went and took my glucose tolerance test today and I’ve felt really nasty ever since. I’ve thrown up twice, and I had a really bad headache. I was just wondering if any of you ladies that have taken this stupid test felt the same way after?

A: Hey

yes I had it a couple of weeks ago, I was really tired/groggy from it, I threw up once, had something to eat and then slept, I felt better after a sleep and was fine the next day.
EDIT – also even though I was feeling that yucky, I never heard anything about my results even after leaving a message with the doctor, so try not to stress!!

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