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Doctor insights on: 3 Hour Glucose Test

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My cousin is going for her first three hour glucose test for diabetes. What can she expect?

My cousin is going for her first three hour glucose test for diabetes. What can she expect?

Is she pregnant?: There is little reason to do a glucose tolerance test to diagnose diabetes these days. An A1c will suffice as a screen. Pregnant patients who fail a simple test get a 3 hour test to rule out gestational dm. ...Read more

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Blood Sugar (Definition)

The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or animal. The body naturally tightly regulates blood glucose levels as a part of metabolic homeostasis. Glucose is the primary source of energy for the body's cells, and blood lipids (in the form of fats and oils) are primarily ...Read more


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3 hour glucose test results: fasting was 89, thirty minutes was 180, one hour was 198, two hour was 64.... what does this tell me?

3 hour glucose test results: fasting was 89, thirty minutes was 180, one hour was 198, two hour was 64.... what does this tell me?

Normal: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, your results are within the normal limit. The one hour level is at the borderline. See this site for more info. http://www.nlm.nih.gov/medlineplus/ency/article/003466.htm ...Read more

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Will smoking cause you to fail the 3 hour glucose test? How much does it affect it? How many hours before test should I stop to avoid failing?

Will smoking cause you to fail the 3 hour glucose test? How much does it affect it? How many hours before test should I stop to avoid failing?

Please quit smoking!: Smoking will not directly affect a glucose tolerance test. But it is very tempting to tell you it would if it would get you quit at least for a day. Quitting smoking now will affect your long term health much more than the results of this test. If this test is being done because you're pregnant, that's all the more reason to quit smoking now. Becomeanex.Org can help! ...Read more

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I'm pregnant and failed 3-hour glucose test. Should i be worried?

I'm pregnant and failed 3-hour glucose test. Should i be worried?

Retest: Get retested and if you still fail then very closely follow the advice of your doctor to insure a safe pregnancy. ...Read more

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I was just diagnosed with hypoglycemia after a 3 hour glucose test. Does it ever go away? What do I have to know about it?

I was just diagnosed with hypoglycemia after a 3 hour glucose test. Does it ever go away? What do I have to know about it?

Hypoglycemia: Many normal people have relatively low glucose 3 hr after a GTT. But normal people do not go around drinking 75 g of pure glucose. That test does not diagnose hypoglycemia. If you have symptoms after eating sugary meals, then you should change your diet to more protein and complex carbs. Eat small frequent meals. ...Read more

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My first doctor took my 3 hour glucose test which was normal,but my new doctor wants me to do it again. I want to know if my second one will benormal?

My first doctor took my 3 hour glucose test which was normal,but my new doctor wants me to do it again. I want to know if  my second one will benormal?

If your first: test was "normal", your second one will most likely be normal as well, but it is impossible to predict with certainty, particularly if time has passed between the two tests. Did you ask why a second test was indicated? ...Read more

Dr. Cayce Jehaimi
2,569 doctors shared insights

Glucose (Definition)

Glucose is the basic sugar molecule and the source of energy throughout the living kingdom. We are programmed to easily detect it by taste in our foods as it is desirable but can be overdone with the modern diet. It gets out of control ...Read more


Dr. Jeffrey Wint
129 doctors shared insights

Blood Sugar Monitoring (Definition)

Blood glucose monitoring refers to the ongoing measurement of blood sugar (glucose). Monitoring can be done at any time using a portable ...Read more