Top
20
Doctor insights on: 75 G Glucose Tolerance Test

Share
1

1
What's a 3 hour oral glucose tolerance test (ogtt) for diabetes?

What's a 3 hour oral glucose tolerance test (ogtt) for diabetes?

Gestational diabetes: A test for how you respond to known sugar loads in pregnancy and whether you are diabetic from pregnancy... If abnormal, may need to make changes in diet or meds. ...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


2

2
What oral glucose tolerance test result indicates diabetes?

What oral glucose tolerance test result indicates diabetes?

Unclear question: There is a set of rules for interpreting the results of ogt and it should be done by your doctor. ...Read more

3

3
Fasting glucose 85. then GTT hour 1glucose 84, hour 2 glucose 94. what would cause this odd response?

Fasting glucose 85. then GTT hour 1glucose 84, hour 2 glucose 94. what would cause this odd response?

Normal variability: So for that test, you basically get a dose of glucose to see if your blood sugar remains elevated. Our bodies respond very quickly to glucose, meaning that it gets taken up by our muscles and liver almost immediately after it enters the blood stream. Our body's "thermostat" is set to keep the blood sugar level between 70-99. Over 100 indicates a problem with glucose metabolism. Yours is normal. ...Read more

See 1 more doctor answer
4

4
Have GTT test. Blood glucose normal. O hour and 1 hour urine glucose negative but 2 hour urine glucose is trace. False positive or renal glycosuria?

Have GTT test. Blood glucose normal. O hour and 1 hour urine glucose negative but 2 hour urine glucose is trace. False positive or renal glycosuria?

Urine glucose: If your GTT is OK and the 2 hour urine only a trace high, I don't think you have anything to worry about. That said, be careful with your food and drink intake. ...Read more

5

5
How do fasting insulin test and glucose test differ?

How do fasting insulin test and glucose test differ?

Different tests: Insulin & glucose are 2 different ways to measure diabetes. Insulin is produced by pancreas to keep sugars under control. We measure glucose to see how well sugars are controlled. We can measure Insulin to determine how much effort pancreas is making to control sugars. Think of glucose as speedometer & Insulin as tachometer (hgba1c is avg trip speed - ask a car nut if this doesn't make sense). ...Read more

6

6
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

7

7
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. ...Read more

See 1 more doctor answer
8

8
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

9

9
Does everyone need a 3 hour glucose tolerace test for gestational diabetes?

Does everyone need a 3 hour glucose tolerace test for gestational diabetes?

Newer recommendation: Is that non-diabetic pregnant women undergo a 2-hour 75-gram oral glucose tolerance test at 24-28 weeks of gestation. Women should be fasting for this test, and a fasting glucose level should be included. If any one of the following values are abnormal, you have gestational diabetes: fasting at 92 or above (mg/dl), one-hour at 180 or above, two-hour at 153 or above. ...Read more

10

10
Took two, 3 hour glucose tolerance /insulin tests, one test had low blood sugar AND second test had high insulin both in the 3rd hour. How to treat?

Took  two, 3 hour glucose tolerance /insulin tests, one test had low blood sugar AND second test had high insulin both in the 3rd hour. How to treat?

Ignore it: and don't do the testing again. The GTT is NOT a valid test for hypoglycemia, and insulin levels are generally unreliable and meaningless. You are probably overweight with insulin resistance. Eat less, exercise more, and lose weight. ...Read more

11

11
Recently bloodwork for fasting insulin. How is this different that a glucose tolerance test or a fasting glucose test?

Recently bloodwork for fasting insulin. How is this different that a glucose tolerance test or a fasting glucose test?

Different tests: Insulin & glucose are 2 different ways to measure diabetes. Insulin is produced by pancreas to keep sugars under control. We measure glucose to see how well sugars are controlled. Think of glucose as speedometer & Insulin as tachometer (hgba1c is avg trip speed - ask a car nut if this doesn't make sense). Glucose tolerance test requires drinking sugar whereas other 2 tests don't. ...Read more

12

12
My bl sugar level drops to 50 3 h after eating,normal insulin, c-peptide, liver enzymes' levels,family history of diabetes,is it reactive hypoglycemia?

My bl sugar level drops to 50 3 h after eating,normal insulin, c-peptide, liver enzymes' levels,family history of diabetes,is it reactive hypoglycemia?

Reactive hypoglycemi: yes. It is. Whenever you eat ready sugars or simple sugars( made with table sugar, juices) your body releases lots of insulin . Your sugars get absorbed mostly from stmach and there is still insulin in the blood that continue to lower your sugar.you should avoid ready sugars and take more complex carbs. Along with proteins. You most likely will be developing diabetes in near future. So watch !! ...Read more

See 1 more doctor answer
13

13
Blood sugar mg/dl-71; 91; 75; 50; 35 with insulin levels <2; 39; 28; 3, all these values every 30 minutes. Is this insulin resistance or insulinoma?

Blood sugar mg/dl-71; 91; 75; 50; 35 with insulin levels <2; 39; 28; 3, all these values every 30 minutes. Is this insulin resistance or insulinoma?

Probably neither: I assume these test results are from a glucose tolerance test. If that is correct, it shows "reactive hypoglycemia". Your body is appropriately putting out Insulin in response to the glucose load, but the action of the Insulin is prolonged, and so you end up with a low sugar. You do not have diabetes, so I'm not sure why you are on metformin. You should have carbohydrate loaded for 3 days to be valid. ...Read more

15

15
Basal glucose =81 mg/dl but insuline =38 mU/ml (insuline/glucose > 0,3 ). Symptoms of ipoglycemia... How to exclude an insulinoma? Ultrasound?thanks!

Hypoglycemia: To diagnose insulinoma, you need to demonstrate inappropriately high insulin/C-peptide when your glucose is low. A glu of 81 is not low, it is normal. You have symptoms of hypo, but these symptoms are often from something else. Insulinoma is rare. Do not start getting CT/ultrasound etc until you establish the biochemical diagnosis first. An Endocrinologist can help you. ...Read more

16

16
Type II diabetic, blood insulin last test (NOT glucose)=29.5 On lantus (insulin glargine) 62 units, humalog 17 units. Am I still producing endogenous insulin?

Type II diabetic, blood insulin last test (NOT glucose)=29.5 On lantus (insulin glargine) 62 units, humalog 17 units. Am I still producing endogenous insulin?

Need C-peptide test: Since exogenous (injected) insulin will show on a blood test, C-peptide should be measured to assess for endogenous insulin. Proinsulin is made by the pancreas, then cleaved into C-peptide & insulin. Exogenous insulin has no C-peptide. ...Read more

17

17
Will 4 grams of sugar affect fasting blood glucose?

Will 4 grams of sugar affect fasting blood glucose?

Do you have diabetes: If you have diabetes the more sugar you take the higher your blood sugar is likely to be. If you don't have diabetes it is likely that 4 grams of sugar won't affect your diabetes. Why are you taking 4 grams of sugar? Are you really weighing it? ...Read more

18

18
Can vitamin D3 with glucose syrup elevate your glucose blood test level?

Not by much.: In glucose tolerance test, 50 gms of glucose is given, and a normal rise of blood glucose from that is about 30. I can't see a couple of grams raising it significantly. ...Read more

19

19
Does P17 shots(hydroxyprogesterone) affect blood sugar or glucose?I had borderline high c-peptide and lowered by ketonic diet.i'm scared about diabete

Does P17 shots(hydroxyprogesterone) affect blood sugar or glucose?I had borderline high c-peptide and lowered by ketonic diet.i'm scared about diabete

Diabetes: At 22 you could have type 1 diabetes but sometimes it is type 2. Type 1 won't go away until new technologies come into effect over 10-15 years. With borderline c-peptide you may be fine soon if you work hard on blood sugar control. Depends on your eating and exercise goals. ...Read more

20

20
Glucose fasting 80, 60min 168, 120min 119. Insulin fasting 5.25, 60min 42.36, 120min 34.47. HbA1c 5,2%. Impaired glucose tolerance/insulin resistance?

Glucose fasting 80, 60min 168, 120min 119. Insulin fasting 5.25, 60min 42.36, 120min 34.47. HbA1c 5,2%. Impaired glucose tolerance/insulin resistance?

Nice and normal: Hi. Those glucose and insulin values look nice and normal, showing neither impaired glucose tolerance nor insulin resistance. Eat healthily and exercise regularly. Good luck! ...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
2,605 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