I had a glucose tolerance test today. After I drank the liquid I felt nauseous and fuzzy headed for an hour.?

Question

Is this normal? Please don't answer if you don't know. Thanks!

Answer 1

When i had my glucose tolerance test there were also two other people having one done, and i was the only one who seemed to be affected. I was nauseous, dizzy, weak, shaky, and just felt terrible! It turned out that i was pre-diabetic, (insulin resistant- hyperglycemic). I saw a nutritionist, and changed my diet a bit, and started exercising and my sugar is under control. Hope this helps!!

Answer 2

Not sure, as it was a VERY long time ago I had mine. But I believe this might be the expected response if someone is diabetic or near being diabetic.

If you have a very high blood sugar (i.e., your body isn't processing the glucose correctly), these are common symptoms.

Answer 3

Sounds like fun! Where can I acquire said beverage?

(I apolgize for the non-seriousness of my first response. I spoke with the receptionist at our office, she says that she felt that way after drinking the liquid, so perhaps it is normal. I would still recommend contacting your doctor, however, rather than ask all us yahoos on Yahoo! Answers)

Answer 4

That is not an unusual response and it doesn't mean anything. It's a lot of sugar when you are fasting. If you pregnant, it's even more common/ Just be glad you didn't throw up, then it has to be repeated!

Answer 5

I am sure it is quite normal, chances are they had you fast prior to the testing to get and accurate reading. Perhaps if you co eat somthing now you may feel more normal.

If you continue you may want to ask your doctor?

Are they currently testing you for diabetes?

Answer 6

Fasting or oral glucose tolerance test


Definition
The fasting glucose tolerance test is a laboratory method to check how the body breaks down (metabolizes) blood sugar.



Alternative Names
Oral glucose tolerance test

How the test is performed
Glucose is the sugar that the body uses for energy. Patients with untreated diabetes have high blood glucose levels. Glucose tolerance tests are one of the tools used to diagnose diabetes.

The most common glucose tolerance test is the oral glucose tolerance test (OGTT). You can not eat or drink anything after midnight before the test. For the test, you will be asked to drink a liquid containing a certain amount of glucose. Your blood will be taken before you do this, and again every 30 to 60 minutes after you drink the solution. The test takes up to 3 hours.

Blood glucose levels above normal limits at the times measured can be used to diagnose type 2 diabetes or gestational diabetes (high blood glucose during pregnancy). Insulin levels may also be measured. (Insulin is the hormone produced by the pancreas that moves glucose from the bloodstream into cells.)

The intravenous glucose tolerance test (IGTT) is not often used. In this test, glucose is injected into your vein for 3 minutes. Blood insulin levels are measured before the injection, and again at 1 and 3 minutes after the injection. This test may predict the development of type 1 diabetes in some patients.



How to prepare for the test
Make sure you eat normally for several days before the test.

Do not eat or drink anything for 12 hours prior to the test. You can not eat during the test.

Ask your health care provider if you are using medications that can interfere with the test results.



How the test will feel
When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.



Why the test is performed
The oral glucose tolerance test is used to screen pregnant women for gestational diabetes between 24 and 28 weeks of pregnancy. It may also be used to in cases where the disease is suspected, despite a normal fasting blood glucose.



Normal Values
Normal blood values for a 75-gram oral glucose tolerance test used to check for type 2 diabetes:

Fasting: 60 to 100 mg/dL
1 hour: less than 200 mg/dL
2 hours: less than 140 mg/dL. Between 140-200 mg/dL is considered impaired glucose tolerance or pre-diabetes. This group is at increased risk for developing diabetes. Greater than 200 mg/dL is diagnostic of diabetes mellitus
Normal blood values for a 50-gram oral glucose tolerance test used to screen for gestational diabetes:

1 hour: less than 140 mg/dL
Normal blood values for 100-gram oral glucose tolerance test used to screen for gestational diabetes:

Fasting: less than 95 mg/dL
1 hour: less than 180 mg/dL
2 hour: less than 155 mg/dL
3 hour: less than 140 mg/dL
Note: mg/dL = milligrams per deciliter

What abnormal results mean
Greater than normal levels of glucose may mean you have diabetes or gestational diabetes .

However, high glucose levels may be related to another medical problem (for example, Cushing syndrome ).





Special considerations
Interfering factors:

Acute stress (for example, from surgery or an infection)
Vigorous exercise
Several drugs may cause glucose intolerance, including:

Thiazide diuretics (for example, hydrochlorothiazide)
Beta-blockers (for example, propranolol)
Oral contraceptives (birth control pills)
Corticosteroids (for example, prednisone)
Certain psychiatric medications

The temporary feelings of nausea if not due to the above mentioned prescribed drugs could simply be a vasovagal reaction (lowering of your heart rate) due to the sudden bombardment of a high dose of glucose taken orally. Or it's because of the insulin sensitivity which are released from the pancreas to metabolize the sugars. Mention this sensation to the doctor. It could be an early sign of diabetes of ;either Type II or gestational (diabetes in pregnancy) That's why this test is being performed . It's usually more accurate to diagnose for the early stages of DM.( Diabeter Mellitus) Esp if your FBS ( fasting blood sugar) was tested high.