OGTT Question

[nothing56]

Hi All,

after being quite successful with the ND and then low carbing i decided to do a home OGTT.

The results turned out promising, Fasting was 4.2 and at the 2hr point 6.8

Im still low carbing and did not do the 3 days of 150g of carbs beforehand so i know the results will be slightly higher than if i was not low carbing.

This all looks quite good however i was taking 30min readings and the reading at the 1hr mark was 12. This got me worried but after doing some research i cant find any consistent info on if this mattered. Most of the NHS guides just say its the 2hr number being under 7 that counts.

I know as a general rule that your blood numbers under normal day to day life would never go above 11 however the OGTT is not normal life and many of the reports i have read suggest not using it.

Does anyone have any other more informed sources or opinions at all?

 

[adriangoatseye]

I can't answer your question but as a newbie can I ask what OGTT means?

 

[nothing56]

Hi,

Its the Oral Glucose Tolerance Test

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

Its designed to test how your body deals with a defined glucose load. Its not used all that much for diagnosing diabetes anymore (apart from for pregnant women).

Im using it for a few reasons.

My fasting results are always ok and my HbA1c is now in the normal range. However im trying to establish if this is because of the low carb diet or because i have managed to reduce my insulin resistance to the point that the insulin i produce is enough to keep my levels normal.

There is quite a lot of research that claim post meal rise and falls are far better indicators of diabetes long term risk than high fasting levels.

 

[Totto]

I can't answer your question but as a newbie can I ask what OGTT means?

Oral glucose tolerance test. You drink 75 grams of glucose with some water, test before and after 2 hours.

 

[Issy12]

Hi, I had that test last week at the doctors to confirm my diabetes, and I'm defiantly not pregnant!

 

[Lamont D]

Hi,

Its the Oral Glucose Tolerance Test

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

Its designed to test how your body deals with a defined glucose load. Its not used all that much for diagnosing diabetes anymore (apart from for pregnant women).

Im using it for a few reasons.

My fasting results are always ok and my HbA1c is now in the normal range. However im trying to establish if this is because of the low carb diet or because i have managed to reduce my insulin resistance to the point that the insulin i produce is enough to keep my levels normal.

There is quite a lot of research that claim post meal rise and falls are far better indicators of diabetes long term risk than high fasting levels.

I have quite a few glucose tests, but mine have been the prolonged test.
The answer to your question is both yes!
Your insulin response looks good to me and the resistance should be ok if you are getting normal fasting levels.

My hba1c and the usual fasting levels are in the normal range. But that does not mean you are diabetic or prediabetic, this is determined usually by a hba1c test, to see if your average three month levels have been and now they don't have to be fasting.

I do know that you may be spiking quicker than is normal, but that does happen in lots of cases. It's usually the two hour figure we consider to see patterns of what foods do to us, wether we can tolerate them or not! Hence all the testing and experimentation

Only tests can determine a diagnosis and only doctors or specialists can do them.

 

[kokhongw]

I find this study and classification of beta cell dysfunction to be helpful in understanding where we may be at...
http://diabetes.diabetesjournals.org/content/53/suppl_3/S16.full

It would seems that you have moved from Stage 4(stable decompensation) to Stage 2 (stable adaptation)?

 

[nothing56]

I find this study and classification of beta cell dysfunction to be helpful in understanding where we may be at...
http://diabetes.diabetesjournals.org/content/53/suppl_3/S16.full

It would seems that you have moved from Stage 4(stable decompensation) to Stage 2 (stable adaptation)?

Thats a great link. Very interesting and aligns with what i was thinking.

The 12 in the OGTT is showing that first phase response is impaired.

When i was first diagnosed i did some baseline tests with specific food and have seen large improvements in the first phase response when testing them.

For me the interesting question is now, is the improvement just down to reduce resistance through weight loss, or is it a combination of a recovery of some of the beta cell function and reduced resistance.

I still have about 20kg to lose so i think either way i can maintain levels below 7 with more reduction in resistance via weight loss.

Thanks for the post.

 

[adriangoatseye]

Thank you for the information. I have learnt something new today