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Topic: Glucose tolerance test


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In the News (Fri 17 Feb 12)

  
  Lifespan's A - Z Health Information Library - Glucose tolerance test
Glucose tolerance tests are one of the tools used to make the diagnosis of diabetes.
In this test, patients are given a known amount of glucose by vein for 3 minutes, and blood insulin levels are measured before glucose and at 1 and 3 minutes.
The oral glucose tolerance test is used to screen pregnant women for gestational diabetes between 24 and 28 weeks of pregnancy.
www.lifespan.org /adam/healthillustratedencyclopedia/1/003466.html   (619 words)

  
 Glucose tolerance test - Wikipedia, the free encyclopedia
A glucose tolerance test in medical practice is the administration of glucose to determine how quickly it is cleared from the blood.
The test is usually used to test for diabetes, insulin resistance, and sometimes reactive hypoglycemia.
Usually the OGTT is scheduled to begin in the morning (0700-0800) as glucose tolerance exhibits a diurnal rhythm with a significant decrease in the afternoon.
en.wikipedia.org /wiki/Glucose_tolerance_test   (565 words)

  
 Glucose Tolerance Test
Glucose Tolerance Tests (GTTs) are diagnostic tests designed to confirm a diagnosis that is suspected from a patient's symptoms.
The O'Sullivan screen is a screening test for women in their third trimester of pregnancy who have had no previous history of gestational diabetes/glucose intolerance, or pregnant women at any stage of pregnancy with either a prior history of gestational diabetes or strong clinical suspicion of developing this disorder.
In general, a GTT should not be performed on patients with acute illnesses, or hospitalized or inactive patients.
www.ddeamc.amedd.army.mil /clinical/Pathology/DPALSGTT.htm   (1230 words)

  
 Glucose Tests: The Test
Blood glucose testing can be used to screen healthy, asymptomatic individuals for diabetes and pre-diabetes because diabetes is a common disease that begins with few symptoms.
From 140 to 200 mg/dL (7.8 to 11.1 mmol/L) Impaired glucose tolerance (pre-diabetes)
Hypoglycemia is characterized by a drop in blood glucose to a level where first it causes nervous system symptoms (sweating, palpitations, hunger, trembling, and anxiety), then begins to affect the brain (causing confusion, hallucinations, blurred vision, and sometimes even coma and death).
www.labtestsonline.org /understanding/analytes/glucose/test.html   (1305 words)

  
 Diagnosing Diabetes: glucose tolerance test and blood glucose levels.
For this reason, if the test shows that you have mildly elevated blood glucose levels, the doctor may run the test again to make sure the diagnosis is correct.
A person is said to have impaired glucose tolerance when the 2-hour glucose results from the oral glucose tolerance test are greater than or equal to 140 but less than 200 mg/dl.
A person has diabetes when oral glucose tolerance tests show that the blood glucose level at 2 hours is equal to or more than 200 mg/dl.
www.endocrineweb.com /diabetes/diagnosis.html   (771 words)

  
 Glucose Test - Page 1
The test is primarily used to screen for, diagnose or monitor patients with diabetes.
Random glucose testing requires no preparation and may be performed either by the patient at home or by a healthcare professional in a clinical setting.
Two-hour postprandial glucose testing, or the two-hour post-glucose challenge, is performed after the patient has eaten a balanced meal containing at least 100 grams of carbohydrates and then fasted for two hours prior to testing (avoiding smoking and strenuous exercise during this period).
heart.health.ivillage.com /bloodtest/GlucoseTest.cfm   (501 words)

  
 Glucose Tolerance Test - Health Encyclopedia
Glucose tolerance tests are one of the tools used to diagnose diabetes.
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).
www.nbc11.com /encyclopedia/6864507/detail.html   (785 words)

  
 Glucose Tolerance Test, Typical Response Patterns
A 2 hour GTT is used to diagnose diabetes, but a 6 hour test might also diagnose diabetes plus hypoglycemia, because symptoms of hypoglycemia occur after the 5th hour.
100 grams of glucose dissolved in water is taken at the beginning of the test.
Glucose in the urine might be an indication of diabetes.
www.rajeun.net /gtt.html   (1582 words)

  
 Oral Glucose Tolerance Test
The oral glucose tolerance test (OGTT) measures the body's ability to use a type of sugar, called glucose, that is the body's main source of energy.
When done for this purpose, the test is called a glucose challenge screening test, and it is usually done during the 24th to the 28th week of pregnancy.
Glucose tolerance test screening by age 30 is recommend for all women who have polycystic ovary syndrome.
www.webmd.com /hw/being_pregnant/hw44896.asp   (1415 words)

  
 Glucose Tests: The Test   (Site not responding. Last check: 2007-10-09)
Glucose testing is also done in emergency settings to determine if low or high glucose is contributing to symptoms such as fainting and unconsciousness.
If a patient has impaired glucose tolerance (when the fasting glucose or OGTT levels are higher than normal but not high enough to be diagnosed as a definite diabetic) their doctor will request a glucose at regular intervals to monitor their progress.
Hypoglycaemia is characterized by a drop in blood glucose to a level where first it causes nervous system symptoms (sweating, palpitations, hunger, trembling, and anxiety), then begins to affect the brain (causing confusion, hallucinations, blurred vision, and sometimes even coma and death).
www.labtestsonline.org.uk /understanding/analytes/glucose/test.html   (783 words)

  
 Glucose tolerance test definition - Diabetes Mellitus, Type 2, Type 1, and Metabolic Disorders treatment and medications
The test may also be done for other purposes such as to diagnose hypoglycemia (low blood sugar) or a malabsorption syndrome in which sugar is not absorbed properly through the intestines into the bloodstream.
The test was designed originally to determines the tolerance for the sugar glucose.
Since the dose of glucose is taken by mouth, the test is sometimes called an oral glucose tolerance test.
www.medterms.com /script/main/art.asp?articlekey=3611   (407 words)

  
 Glucose Screening and Testing : American Pregnancy Association   (Site not responding. Last check: 2007-10-09)
This test will diagnose whether diabetes exists or not by indicating whether or not the body is using glucose (a type of sugar) effectively.
During the test, the mother is asked to drink a sweet liquid (glucose) and then will have blood drawn one hour from having the drink, as blood glucose levels normally peak within one hour.
Prior to the test, your doctor will ask you to make sure that you are eating at least 150mg of carbohydrates for three days prior to the time you will be asked to fast (about what you will get from a slice or two of bread).
www.americanpregnancy.org /prenataltesting/glucosetest.html   (621 words)

  
 Glucose Tolerance Test Used to Diagnose Hypoglycemia
The oral glucose tolerance test (OGTT or GTT) is a diagnosis method for diabetes and reactive hypoglycemia.
Because of the severe symptoms that may occur during the test (100 g of glucose is a hell of a load) a GTT is normally carried out in hospital.
As said, this test is not suitable to diagnose reactive hypoglycemia with, because low blood sugar levels as a reaction on the glucose intake often occur after 2 hours or more (up to 5 or 6 hours).
lightning.prohosting.com /~hypoglyc/gtt.htm   (1037 words)

  
 Glucose tolerance test - The Doctors Lounge(TM)
The test is usually used to test for diabetes, insulin resistance, and sometimes reactive hypoglycaemia.
Most commonly the glucose is given orally so the common test is technically an oral glucose tolerance test (OGTT).
Whilst impaired glucose tolerance is an asymptomatic condition, it carries an increased risk of large vessel disease.
www.thedoctorslounge.net /endocrinology/labs/endocrinology/ogtt.htm   (465 words)

  
 Healthopedia.com - Glucose Tolerance Test (Oral Glucose Tolerance Test, OGTT, GTT)
Glucose is the main form of sugar in the body.
The test is done when a doctor thinks a person has diabetes mellitus, which results in a high blood glucose level.
In the glucose tolerance test, samples of a person's blood are measured at certain times after the person drinks a solution of glucose in water.
www.healthopedia.com /glucose-tolerance-test   (439 words)

  
 Glucose Tolerance Test and Gestational Diabetes
Mothers-to-be with high glucose levels after the screening test are given a glucose tolerance test, a three-hour test involving three separate blood withdrawals.
If the test result confirms a high level of glucose, the mother's condition must be monitored carefully.
Stephanie's glucose level does not require insulin injections, but the elevated level of blood sugar is a concern.
att.iparenting.com /pregnancy/glucose.htm   (505 words)

  
 UMHS - 3-Hour Glucose Tolerance Test
You have been scheduled for a three-hour glucose tolerance test because the result of your one-hour glucose screening was above normal.
The glucose tolerance test measures your body's ability to use carbohydrates properly and to test whether you have developed diabetes during this pregnancy.
When preparing for the three-hour glucose tolerance test, it is important to remember the following: You must eat at least 250 grams of carbohydrates each day for three days.
www.med.umich.edu /1libr/tests/testg07.htm   (268 words)

  
 Glucose Tolerance Test
Also, what are my chances of failing the 3-hour test given my 1-hour results, the fact that I have no family history of diabetes, I did not have GD with my first pregnancy and I am relatively small-framed (was 5'4" and 112 lbs prior to this pregnancy).
This request for the carb overload the night before the test is not one I have heard before, although I am not questioning it as a way to check to see what your body is able to handle in the way of carbs.
Most of the glucose tolerance tests I have heard of involve drinking a nasty sweet syrup to do the carb overload and then testing glucose at several different times after consuming the syrupy beverage.
www.medhelp.org /forums/Diabetes/messages/876.html   (579 words)

  
 Glucose screening and glucose tolerance test
Most healthcare practitioners routinely recommend a glucose screening test (also called a glucose challenge test or GCT) between 24 and 28 weeks of pregnancy to check for gestational diabetes, a high blood sugar condition that some women get during pregnancy.
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.
If your blood glucose level for this test is higher than 200 mg/dL, most practitioners will consider you diabetic and you won't be required to take the glucose tolerance test.
www.babycenter.com /refcap/pregnancy/prenatalhealth/1483.html   (1510 words)

  
 NHS Direct - Health encyclopaedia -Glucose tolerance test
In diabetes the body is unable to make normal use of glucose as fuel, and it accumulates in abnormally large amounts in the blood.
Even in healthy people, glucose levels in the blood always rise after a meal, but they soon return to normal as the glucose is used up or stored.
A glucose tolerance test will distinguish between the normal pattern and the patterns in diabetes.
www.nhsdirect.nhs.uk /articles/article.aspx?articleId=177   (92 words)

  
 Oral Glucose Tolerance Test (OGTT), Cincinnati Children's Hospital Medical Center
Blood is obtained and tested before and at thirty minute intervals (for up to 3 hours) after drinking it to measure glucose (and insulin, if required) levels over time.
When the test is finished, the patient is given a meal of his / her choice.
Test results are available from your physician 1 - 2 weeks after the test date.
www.cincinnatichildrens.org /health/info/endocrine/tests   (395 words)

  
 Oral Glucose Tolerance
An oral glucose tolerance test is the most accurate way to check for diabetes or to determine if a pregnant woman has gestational diabetes, a form of diabetes that develops during pregnancy.
During the test, sugar levels in the blood and urine are monitored for three hours after drinking a sugar solution.
An oral glucose tolerance test is usually done between the 24th and 28th weeks of pregnancy.
www.healthatoz.com /healthatoz/Atoz/dc/tp/tporal.jsp   (630 words)

  
 Oral glucose tolerance test definition - Diabetes Mellitus, Type 2, Type 1, and Metabolic Disorders treatment and ...
For the test to give reliable results, the person must be in good health (not have any other illnesses, not even a cold).
The oral glucose tolerance test measures blood glucose levels 5 times over a period of 3 hours.
People with glucose levels between normal and diabetic have what is termed "impaired glucose tolerance" (IGT).
www.medterms.com /script/main/art.asp?articlekey=16194   (493 words)

  
 Glucose tolerance test (Test)... Fort Lauderdale, Florida   (Site not responding. Last check: 2007-10-09)
Glucose tolerance tests are one of the tools for making the diagnosis of diabetes.
Blood glucose levels above normal limits at the times measured can diagnose type 2 diabetes or gestational diabetes (high blood glucose during pregnancy).
High glucose levels may be a manifestation of another clinical problem (for example, Cushing´s syndrome).
www.browardhealth.org /16931.cfm   (668 words)

  
 Glucose Tolerance Test: An Attempt to Pathologize a Normal Response
In the GTT test, the pregnant woman fasts all night, goes to the lab in the morning, and drinks 100 grams of glucose.
If your birth attendant suggests this test, you can request the use of a hand-held glucose tester which would be used to test blood sugar levels 2 hours after meals throughout pregnancy.
This test taxes the blood sugar regulating mechanisms to their utmost, and there is speculation that the test itself may set in motion these unhealthy blood sugar patterns which weren't present previously.
www.unhinderedliving.com /glucosetolerance.html   (670 words)

  
 Pregnancy Health and Wellness: Prenatal Testing: Gestational diabetes screening and glucose tolerance testing (GTT) at ...
The test is performed by giving 50 grams of a glucose drink [usually in the form of a special can of orange or lemon-lime soda] and then measuring the blood sugar level one ­hour later.
Consequently, a 3-­hour glucose tolerance test must be performed to establish the diagnosis of gestational diabetes.
This testing is usually performed at the end of the second or the beginning of the third trimester (between the 24th and 28th weeks of pregnancy) when insulin resistance usually begins.
pregnancyandbaby.com /read/articles/2084.htm   (895 words)

  
 Healthopedia.com - Glucose Tolerance Test: Results and Values (Oral Glucose Tolerance Test, OGTT, GTT)
When a person has diabetes, glucose levels will rise higher and fail to come down as fast as those in a person without diabetes.
If the blood glucose level is 140 to 199 mg/dL 2 hours after drinking the liquid, a diagnosis of prediabetes can be made.
If the blood glucose level is higher than 200 mg/dL, then another test is done on a different day to confirm whether the person has diabetes.
www.healthopedia.com /glucose-tolerance-test/results.html   (442 words)

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