• Guest - w'd love to know what you think about the forum! Take the 2025 Survey »

Second OGTT after 5 years


I don't know why I didn't think of drinking some glucose instead of eating carbs. It sounds like a more reliable test. Lucozade isn't sold here, but I am sure I can find something similar. Thanks for the idea. I will try it out.

My GP told me that I can't have the tests anymore if I'm not registered as diabetic. I have no saying in that.
 

Hello @Totto
I believe that our two countries are very similar in how things are handled, somewhat different than in Britain.
I have not seen anyone specialized in diabetes, just a practice nurse who weighs, measure height and blood pressure, takes blood sample and ECG, and ticks off a list.
She is a youngish, very chatty woman. When I first saw her, she was overweight after having a couple of children, talking about going to lose weight, which she actually did very fast. Because of that I thought she knew something about nutrition, and mentioned in passing that I had stopped eating potatoes (back then). Her face got an interesting blue colour, and she said something about it beeing wrong of me. That's all. I never mentioned food again.

My GP tells me the results of the bloods a week later, and do the foot tickling procedure. As she is older than the nurse, and never once mentioned diet, I never had the urge to talk about it, as I would expect the same reaction from her.
I do not expect a GP to know everything about every disease on earth. They work long hours and spend most of their time with patients. How can they possibly keep up with all the new science? Think of how much time we spend reading about just one disease. It's impossible.
 
I think it differs a lot depending where you are, a sort of post code lottery regardless if you are in Scandinavia, the UK or somewhere else. I live on an island and there aren't a wide range of practices to choose from. There is one diabetes nurse covering the south part of the island and as she is unbelievably stupid, in my opinion, she also is causing quite a lot of damage while complaining about how bad her patients are doing, bloodsugarwise. You would have thought she'd jump with joy when she saw my tests regularly coming back at around 33 but no, not she.

A neighbour reduced his HbA1c to 54 and she was over the moon and told him how very good he had been. He is a good diabetic and eats bread with every meal.
 

At my last meeting with the nurse, as she was ticking off her list of questions, one of them was: "You test as home, don't you?"
Me: "Yes, but not as much as I once did, now that I have good control". (It is self-funded)
Nurse: "Good, good". Check mark on computer.
Me: "Do many of your T2 patients self test?"
Nurse with a happy smile: "Yes, almost all of them. Once a month or so, that is enough".
I believe I blinked a lot, trying to keep a straight face. I was afraid that I would have had to pick her up from the floor, had I told her that I test 3-4 times a day, down from 10.

I never heard a "well done" either, only a baffled "I have never seen that before".
GP told me a couple of times that a HbA1c of 48 is a very good level, so I expect that most of the once-a-month testers are higher than that. I am the only one in the practice of 5 GPs who got down to none-diabetic levels, so I was once told. I suspect that that is the reason why my GP now doubt my diagnosis.
 
Completely a compliment, it is not easy achieving non diabetic levels, it takes a heap of commitment and strength.
 
This morning I tested myself at home.
I did everything as if I was going to have the test at the lab, but did not have a high carb meal yesterday. Total for the day was 10g carbs. Fasted for 10 hours, did the routine as if I was going to get out, even pretended to drive a car for half an hour.

Liver gave me a boost, so before the test bs was 5.4
Drank an energy drink containing 75g sugar within the required 5 minutes.
Then sat down, as the lab will tell me to do, and hardly moved for the rest of the time.

30 minutes: 11.8
60 minutes: 12.6
90 minutes: 14.3
120 minutes: 10.1

I felt increasingly hungry during all this time, which might, or might not, have been the reason I could not concentrate after an hour, and felt a bit shaky after two hours. I then immediately had my usual breakfast of bacon, eggs and a small tomato, which stopped both brain fog and shakiness quite fast.
I am not bouncing with energy, but feel okay.

Any thoughts?
 
That would just about pass the OGGT but only just.

Was the sugar just 75g of refined sugar?
 
Bluetit1802 said:
That would just about pass the OGGT but only just.

Was the sugar just 75g of refined sugar?
Click to expand...

According to the lab, anything above 11 is positive.

80g carbs of which 75g sugar.
I can't find anything sweet but refined sugar on the ingredients list.
 
AnnInDenmark said:
According to the lab, anything above 11 is positive.

80g carbs of which 75g sugar.
I can't find anything sweet but refined sugar on the ingredients list.
Click to expand...

I understand the criteria for a diabetes diagnosis is above 11 at 2 hours.

http://www.diabetes.co.uk/oral-glucose-tolerance-test.html

What should the OGTT results be?
People without diabetes
  • Fasting value (before test): under 6 mmol/L
  • At 2 hours: under 7.8 mmol/L
People with impaired glucose tolerance (IGT)
  • Fasting value (before test): 6.0 to 7.0 mmol/L
  • At 2 hours: 7.9 to 11.0 mmol/L
Diabetic levels
  • Fasting value (before test): over 7.0 mmol/L
  • At 2 hours: over 11.0 mmol/L

I wonder if you would be better finding some pure glucose to drink rather than a mix of different sugars (fructose, dextrose and sucrose) I am just guessing here!
 

Yes, and my fbg now is much lower than when I was diagnosed. I found my notes from when I started testing six months later, and they were 7.5-8.5 at that time after cutting out a lot of sugary stuff. That is a whole different starting point for an OGTT test.
 
Last edited:

Yes, with your low fasting numbers you are going to struggle to fail this test. I don't know what else to suggest other than a pure glucose drink, similar to the one the doctor will use.
 
In the cause of scientific research, you must understand, I had a white pudding supper last night. Thought I had bolused enough (30 units Humalog) but sadly no. I was still at 14.2, after 4 hours. My BS was still 7.7 at 6.20am. Ugh! And I feel awful. We had just come back from holiday and a very long drive and was so exhausted I just couldn't be bothered to cook. I promise I won't do that again!
 

Sorry you had to go through this.
I think it is worth trying, having a high carb meal, as I am supposed to the evening before my test, and see what my fbg will be. If it is still lowish, I could try a high carb day.
Funny, I can't think of anything to eat.
 

Lol. In my case I would have a sugary breakfast cereal, baked beans on 2 slices of white toast with chips or a huge baguette followed by a massive piece of cake with a jam filling and icing!! Oh and some chocolate biscuits!

Excess protein one day can sometimes cause havoc the following morning with FBG. It takes a while for excess protein to convert to glucose, and I know if I eat more protein than I normally do, it makes a difference the next morning.

How different to see someone deliberately trying to raise FBG and deliberately fail an OGGT.
 

It feels weird too, believe me.
Your wish list rang a few bells with me. I would most likely react to bread and potatoes in som form .... and white or milk chocolate. Excess protein? Never thought of that, but worth a try. I wonder if I would have room for a biscuit.
Great ideas, thanks.
 

Please keep us posted!
 
My thoughts are that if you had 75 grams of sugar, not 75 grams of glucose, you can't compare it with an OGTT. Sugar is sucrose and once inside you it turns into half fructose, half glucose. The OGTT test is done with pure glucose.
 
Totto said:
My thoughts are that if you had 75 grams of sugar, not 75 grams of glucose, you can't compare it with an OGTT. Sugar is sucrose and once inside you it turns into half fructose, half glucose. The OGTT test is done with pure glucose.
Click to expand...

I think you are right, but am not sure I will test at home with glucose.
I had potatoes with my chicken this evening to see if it will have any impact on my fbg tomorrow. Things happened so forgot to test before the meal, but after 90 minutes I was 17.3.
Strange how my sense of taste has changed. The potatoes were well salted, but tasted sweet. I liked the smell better.
 

Well that 17.3 will have told you something Maybe something to tell the doctor.
 
Sooo, after my high number last night I woke up with a fbg of 7.1, so decided to go for it, and went to the lab as soon as it opened. The nice young man checked my details on the computer and asked why I was having another test after so many years.
I told him my story in short, LCHF, normal numbers and so on. He nodded all the way through, and crossed his eyes when I mentioned GP's doubt.
He said that I was not the first one this has happened to, and that the test would be inacurrate if we did it now. I should eat a normal diet for three days, longer if possible.
Before I left I thanked him for understandig, and he said: "I'm T1".
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn More.…