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Doctor insights on: Oral Glucose Tolerance Test Side Effects

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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. ...Read more

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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Home ogtt (oral glucose tolerance test), how to do it?

Home ogtt (oral glucose tolerance test), how to do it?

Not an approved test: Hi. You could conceivably weigh out 75 grams of glucose at home and use a finger stick blood glucose meter and do something very similar to a real, diagnostic Standard 2-Hour OGTT, and get a good sense for your glycemic status, but there is no test approved for home diagnosis. Serum glucose should be used (not whole capillary blood). If you want an OGTT, I surest you go get a real one. Good luck! ...Read more

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What is the oral glucose tolerance test?

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. ...Read more

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What is the difference between oral glucose tolerance test and modified glucose tolerance test?

THe modified: Test is simpler and shorter -- and used only in pregnant women, looking to diagnose gestational diabetes, or diabetes in pregnancy. ...Read more

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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?

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. ...Read more

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Can a doctor do an oral glucose tolerance test if I recently drank a coke?

Can a doctor do an oral glucose tolerance test if I recently drank a coke?

Fasting needed : You will need to fasting (without food or drinks) for a minimum of 8 hrs before doing such test. Even if your soda was diet, it still can affect the accuracy if the test. ...Read more

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Fail first glucose tolerance test repeated with a fastied 3hour gluclose tolerance with 100mg oral. 1st hr normal 2nd and 3rd is above normal range?

Fail first glucose tolerance test repeated with a fastied 3hour gluclose tolerance with 100mg oral.  1st hr normal 2nd and 3rd is above normal range?

Need more info: Please note that lab results need to be interpreted in the total clinical context and the doctor who ordered the tests is in the best position to do that. Actual values are needed for evaluation and related circumstances, e.g. Are you pregnant? What is your hb a1c level, do you have symptoms of diabetes? ...Read more

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Can you tell me about glucose tolerance test, now what?

Can you tell me about glucose tolerance test, now what?

Test: Hi. The most standardized test for diabetes, the Oral Glucose Tolerance Test generates data for fasting and a "postprandial" in response to a standard caloric challenge (75 grams of glucose) measured 2 hr after the glucose. Based on criteria for the fasting and 2 hour post-challenge glucoses, you are either normal, diabetic, or the gray zone in between, pre diabetes. Eat healthy diet & exercise! ...Read more

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Can taking glucosamine daily affect the glucose tolerance test?

Not at all: Studies have been done with animals , they were given massive amount of glucosamine and they did not develop glucose intolerance. ...Read more

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How long before my glucose tolerance test should I be drinking the glucose?

Depends: It depends. If you are having the initial 1 hour glucose challenge test performed at 24-28 weeks, you will have bloodwork drawn one hour after drinking the glucola. If you failed the 1 hour sugar test, a 3 hour sugar test would be performed and blood would be drawn before you drink the glucola and at 1, 2 and 3 hours later. ...Read more

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What is a pediatric glucose tolerance test?

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) ...Read more

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Pediatric glucose tolerance test, how is this done?

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. ...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


Dr. Cayce Jehaimi
2,588 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