Oral Glucose Tolerance Test

[bobbyboo]

Hi Everyone

I am new to this community and am a parent of a child with Type 1. I was very tired after eating so tested my own blood sugars and found they were higher than recommended so I researched this and did a home oral glucose tolerance test. My early morning fasting blood sugar was 5.4 and I drank 75g powdered glucose dissolved in water. My blood sugar readings over the next two hours were 9.5, 9.2, 7.5 and then 8.3 at the two hour mark. I can see this is higher than the WHO recommendations for blood plasma readings (which are higher than BG readings). I rang my GP who say they do not do this test anymore but only do HBA1c's. I know from my son that this only shows an overall picture of the last three months but does not show variations. Any thoughts? Am I pre-diabetic? If so what I can do to reverse it or prevent it progressing. I had my genes tested lately for family history but it does show medical information and I am genetically predisposed to Type 2 and it is in the wider family although not in my immediate family. Many thanks, Jill x

 

[Grazer]

Your doctor may not dothem anymore, but oral gluose tolerance tests are still valid. Trouble is, your test was analysed using readings taken from your own meter which can be notoriously innacurate. HbA1c probably is the best way to diagnose diabetes or pre diabetes for you.
If you're worried, I've pasted below some info I've given to newly diagnosed T2's in the past. The diet info in it would help if you have concerns with your BGs:-

"All carbohydrates turn to sugar when we eat them, and no type 2 diabetic on diet only, or on diet and metformin only, can control their blood sugars (BGs) without controlling their carb intake. Even those on strong medication normally choose to control their carb intake to keep the level of medication they take down. The total number of carbs per day you can eat depends on how advanced your diabetes is. It’s perhaps worth starting at about 50% of normal levels for a non-diabetic then adjusting up or down according to how you get on. That’s 150 grams of carbs per day for a man, 125 for a woman. You can read the total carb content of food under “nutritional info” on the packet or wrapping, or look it up on the internet for loose food. Just google “carb content..”
You also need to stop or reduce the bad carbs; that is the starchy ones that make your BG go up quickly.
So obviously no sugar or glucose! But also no white bread, white rice, pasta, flour products like pastry, cake and batter. You can eat a little basmati rice, wholewheat pasta or the tri-color pasta fusilli ones in small quantities. Boiled new potatos are OK but not old pots mashed, boiled or in their jackets. (Roast is not so bad, the fat slows their absorption and conversion to glucose in the blood) Amongst other veg, parsnips are about the worst for BG, and carrots not great but ok in smaller amounts.
Multi grain bread (not wholemeal) is not SO bad, but lots of us eat Burgen soya and linseed bread from tescos and sainsburys, although all bread should be in limited amounts.
All fruit has carbohydrates, and needs to be included in the amounts of carbs you eat in a day. For most people, bananas are about the worst for pushing our BG up and berries (like strawberries, raspberries etc) are the least bad.
No sweeties!
Exercise is important. I tend to exercise about an hour after eating when I know my BG will be peaking. This helps to bring it down quicker and further. I do ten minutes hard work on an exercise machine, but you could run up and down stairs for ten minutes or go for a brisk walk.
Returning to types of food and quantities of carbs - you can only find out how many you can eat by testing. Most type 2’s are not given access to testing equipment, so you should get your own – although try arguing with your Doc that you want to manage to NICE guideline blood sugar levels, and can’t do that without testing! If you have to buy a meter, they are cheap and most manufacturers will give them away for free. They make their money on the strips you have to use! So go for the meter with the cheapest testing strips. Some people test before and after eating, on waking (fasting test) and before bed. But if you have limited strips because of cost, the key to me is testing 2 hours after eating. If your BG is above, say, 7.8 at that stage, you need to cut down on the carb content the next time you have that meal. Test after various different meals and you soon get to see a pattern of what you can and can’t eat, and in what quantities. You can then reduce your testing. I said “below, say, 7.8” because NICE guidelines are below 8.5 but most of us think that’s a little high. 7.8 is the max. level at 2 hours after eating that a non-diabetic normally gets to so is perhaps a better target. Some then set progressively lower targets.
Do ask lots of questions; there is normally an answer on here. The more you get to learn about your diabetes, the better it will be.
Good luck!"

Hope some of this is hepful.

 

[hanadr]

Bobbyboo
It's not altogether surprisin for the parent of a T1 child to have impaired glucose tolerance.
I would suggest you cut your carbs back until you keep your bg NORMAL. Look at the leaflet that comes with your test strips, which will give you a number for normal blood glucose.
Cutting back on carbs won't hurt anyone.
Hana

 

[daisy1]

Hi Jill and welcome to the forum
Here is the advice that we give to new members which may help you regardless of whether you are diagnosed diabetic, pre-diabetic, or not far off. The diet information is anyway a healthy way of eating. Ask all the questions you need to and you will get lots of answers.

BASIC INFORMATION FOR NEWLY DIAGNOSED DIABETICS


Diabetes is the general term to describe people who have blood that is sweeter than normal. A number of different types of diabetes exist.

A diagnosis of diabetes tends to be a big shock for most of us. It’s far from the end of the world though and on this forum you’ll find well over 30,000 people who are demonstrating this.

On the forum we have found that with the number of new people being diagnosed with diabetes each day, sometimes the NHS is not being able to give all the advice it would perhaps like to deliver - particularly with regards to people with type 2 diabetes.

The role of carbohydrate

Carbohydrates are a factor in diabetes because they ultimately break down into sugar (glucose) within our blood. We then need enough insulin to either convert the blood sugar into energy for our body, or to store the blood sugar as body fat.

If the amount of carbohydrate we take in is more than our body’s own (or injected) insulin can cope with, then our blood sugar will rise.

The bad news

Research indicates that raised blood sugar levels over a period of years can lead to organ damage, commonly referred to as diabetic complications.

The good news

People on the forum here have shown that there is plenty of opportunity to keep blood sugar levels from going too high. It’s a daily task but it’s within our reach and it’s well worth the effort.

Controlling your carbs

The info below is primarily aimed at people with type 2 diabetes, however, it may also be of benefit for other types of diabetes as well.
There are two approaches to controlling your carbs:

• Reduce your carbohydrate intake
• Choose ‘better’ carbohydrates

Reduce your carbohydrates

A large number of people on this forum have chosen to reduce the amount of carbohydrates they eat as they have found this to be an effective way of improving (lowering) their blood sugar levels.

The carbohydrates which tend to have the most pronounced effect on blood sugar levels tend to be starchy carbohydrates such as rice, pasta, bread, potatoes and similar root vegetables, flour based products (pastry, cakes, biscuits, battered food etc) and certain fruits.

Choosing better carbohydrates

Another option is to replace ‘white carbohydrates’ (such as white bread, white rice, white flour etc) with whole grain varieties. The idea behind having whole grain varieties is that the carbohydrates get broken down slower than the white varieties –and these are said to have a lower glycaemic index.
http://www.diabetes.co.uk/food/diabetes ... rains.html

The low glycaemic index diet is often favoured by healthcare professionals but some people with diabetes find that low GI does not help their blood sugar enough and may wish to cut out these foods altogether.

Read more on carbohydrates and diabetes

Eating what works for you

Different people respond differently to different types of food. What works for one person may not work so well for another. The best way to see which foods are working for you is to test your blood sugar with a glucose meter.

To be able to see what effect a particular type of food or meal has on your blood sugar is to do a test before the meal and then test after the meal. A test 2 hours after the meal gives a good idea of how your body has reacted to the meal.

The blood sugar ranges recommended by NICE are as follows:

Blood glucose ranges for type 2 diabetes

• Before meals: 4 to 7 mmol/l
• 2 hours after meals: under 8.5 mmol/l

Blood glucose ranges for type 1 diabetes (adults)

• Before meals: 4 to 7 mmol/l
• 2 hours after meals: under 9 mmol/l

Blood glucose ranges for type 1 diabetes (children)

• Before meals: 4 to 8 mmol/l
• 2 hours after meals: under 10 mmol/l

However, those that are able to, may wish to keep blood sugar levels below the NICE after meal targets.

Access to blood glucose test strips
The NICE guidelines suggest that people newly diagnosed with type 2 diabetes should be offered:

• structured education to every person and/or their carer at and around the time of diagnosis, with annual reinforcement and review
• self-monitoring of plasma glucose to a person newly diagnosed with type 2 diabetes only as an integral part of his or her self-management education

Therefore both structured education and self-monitoring of blood glucose should be offered to people with type 2 diabetes. Read more on getting access to blood glucose testing supplies.

You may also be interested to read questions to ask at a diabetic clinic

Note: This post has been edited from Sue/Ken's post to include up to date information.
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Please sign our e-petition for free testing for all type 2's; here's the link:
http://www.diabetes.co.uk/petition/

Do get your friends and colleagues to sign as well.

 

[ButtterflyLady]

I had an oral GT test done and it made me feel very ill for the rest of the day. It does have a place in some clinical circumstances. HbA1c is more convenient and reliable - I would be surprised if you were heading towards pre-diabetes and this test came back fine. In my extended family there is both T1 and T2 diabetes - and a wide variety of age-of-onset and individual experiences. I wish I could go back in time and make healthier eating choices, but hindsight is always 20:20 vision.