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Doctor insights on: 1 Hour Glucose Tolerance Test Pregnancy

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What's a one hour oral glucose tolerance test?

What's a one hour oral glucose tolerance test?

Screen test: Popular test in obstetrics to identify gestational diabetes : blood sugar is drawn, the patient drinks 75 gm of glucose in the form of glucola and blood sugar is drawn 1 hr after.

Tolerance (Definition)

When one takes a drug, such as heroin or alcohol, repeatedly, 'tolerance' develops because more of the drug is needed to give the same effect on the body/brain; e.g. Liver enzymes r stimulated to metabolize the drug faster and faster. There may be a strong genetic predisposition to addiction, some studies suggesting that 1 of 10 people will become dependent on alcohol or some ...Read more


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I am prediabetic with higher blood sugar and insulin levels. L just had a 3 hour glucose tolerance test. Fasting sugar is 63, insulin is 2. Meaning?

I am prediabetic with higher blood sugar and insulin levels. L just had a 3 hour glucose tolerance test. Fasting sugar is 63, insulin is 2. Meaning?

Doesn't matter: The numbers aren't really important or valuable. If you're overweight and have high glucose (particularly with a positive family history) you need education, diet, exercise, weight reductio and maybe medication -- not just a diagnosis. The diagnosis doesn't help you get healthier.

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I'm 24 weeks preg. I did the glucose tolerance test: 75g of glucose, test after two hours 132mg/dl. Should I worry? What should I do to reduce it?

Normal: You did a screening test with 75g of glucose. A result under 140 is considered normal. If it was above 140 you would have had a full glucose tolerance test with 100 gm. You do not need to worry.

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My oral glucose tolerance test decreased on hours 2 & 3--my doctor mentioned this but did not explain. Why is this significant?

My oral glucose tolerance test decreased on hours 2 & 3--my doctor mentioned this but did not explain. Why is this significant?

Need the numbers: Hi. We can't tell you anything about your OGTT without knowing the numbers. Give us fasting and 2 hour; that's all we need.

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Glucose tolerance test: I passed but 1hr-173; 2hr-167; 3hr-103. I walked during last hour. Would walking make me pass when I should have failed?

Glucose tolerance test: I passed but 1hr-173; 2hr-167; 3hr-103. I walked during last hour. Would walking make me pass when I should have failed?

Not likely: Even though you did not follow the protocol, given the other results, you are not likely to have failed the test had you stayed put as required. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.

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My glucose tolerance test results : fasting = 105; 1 hr. Post swallow = 188; 2 hr. Post = 158; 3 hr. Post = 55; 4 hr. Post = 57; a paradox? A1c = 5.4%

IFG & IGT: Hi. You meet criteria for pre-diabetes on the basis of impaired fasting glucose (IFG) and impaired glucose tolerance (IGT). Your A1c is not yet abnormal, but you see how your glucose goes into the 50's a few hours after a challenge; that offsets the A1c, making it a less sensitive test for diabetes. Eat healthy, exercise regularly, and talk with your doc about possible medications to prevent diabe

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Confused. Got 1 touch machine two weeks ago, readings are frequently as high as 20 mmol, but did glucose tolerance test and it was normal?? what do?

Confused. Got 1 touch machine two weeks ago, readings are frequently as high as 20 mmol, but did glucose tolerance test and it was normal?? what do?

Lab test: Glucometer is not used for diagnosis. If you want to know if you have diabetes, ask your doctor to order fasting glucose and an A1c. If bs is over 126 fasting and a1c is over 6.5, then you have diabetes. Good luck.

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I got a glucose tolerance test, now what?

I got a glucose tolerance test, now what?

Screen for diabetes: A normal test can help you feel better that you don't have diabetes. An abnormal test can fall into two buckets - either borderline or frankly diabetic. The cutoffs for "abnormal" are different depending on why you had the test. This is a good thing to speak to the ordering physician about.

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What can the do in a glucose tolerance test?

Drink glucose soluti: You drink a glucose solution and then have blood samples taken at various intervals to be analyzed for glucose level.

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What is the oral glucose tolerance test?

See details: You drink a glucose preparation (glucola) and your blood glucose is checked before you drink it and at intervals up to 3 or 5 hours after you drink it.

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What is a pediatric glucose tolerance test?

A test 4 Diabetes: A GTT is used if there is a suspicion of diabetes. A glucose level is checked 1st, then the person drinks a standardized drink with sugar, and then two hours later the glucose is checked again. If glucose >200 the patient has Diabetes (type II) whereas 140-200 indicates "pre-diabetes" (at high risk for developing diabetes)

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Pediatric glucose tolerance test, how is this done?

Easy test: For a glucose tolerance test there will first be a blood draw for baseline glucose. Some doctors include insulin levels and urine test as well. Then your child will drink a concentrated solution of sugar water and have labs drawn hourly for 3 (sometimes 5) hours. The results will show whether blood sugar follows the expected pattern.

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What is a glucose tolerance test?

A check for diabetes: The GTT is a way for us to see who is at highest risk of diabetes. It is recommended that everyone be screened during their pregnancy, usually around 24-28 weeks. We will give you a bottle of a very sugary drink. You have five minutes to drink it all! Then a hour later we do a blood test to see how you metabolized the sugar. If you are high risk you may need further testing or treatment.

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Do I need a glucose tolerance test?

Do I need a glucose tolerance test?

Yes: You actually need a glucose challenge test (gct) in pregnancy, which is a 1 hour screening test for gestational diabetes. If your screening test is abnormal then you need the glucose tolerance test (gtt), which is typically a 3 hour test. It is very important that all women are screened for gestational diabetes in their pregnancies.

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How do I do a glucose tolerance test?

How do I do a glucose tolerance test?

GTT at home: Glucose tolerance testing is done less frequently now a days. You can do your own home version geta home glucose testing kit. Do the 1st blood glucose after an overnight fast, have a very hearty breakfast and do a bl glucose 1 hour and 2 hrs after the breakfast. Your fasting bl glucose should be below 200 if above 200 you do not need to do the test, you have diabetes and the result will not cha.

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Dr. Julie Abbott
4 Doctors shared insights

Pregnancy (Definition)

When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more


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