Home OGTT test - Rapilose and Insulin resistant

Both @bulkbiker @DCUKMod were kind enough to provide blood sugar figures for their OGTT tests using Rapilose that can be bought on the net
http://www.gpsupplies.com/rapilose-ogtt-glucose-solution-300ml-pack-of-1

Kraft did research on various typed of responses to sugar and its predictive effects for diabetes well before any actual diabetes manifest itself. This is yet another test I had not heard of prior to diagnosis and still have not had following diagnosis.

I am going to give myself the test tomorrow and see what happens. In preparation for that have looked at the original Kraft charts, which the Rapilose website then correlates to blood sugar level.

I then created a chart which includes the glucose data provided by @bulkbiker and @DCUKMod and the relevant glucose readings for the types of insuln curves described by Kraft.

I am thinking that using this method, doing the same test annually under the same conditions in terms of prior food content, should give an indication of whether or not one's own insulin responses are getting better or worse. Th relative swings compared to the Kraft curves may well be way higher than the curves show, because of th sheer shock t the system of a sudden flood after so long without.

In any event here is the data for you correlated to the rapilose website interpretation of the Kraft Curves and restated into mmol !

Bluetit1802 said:

@CherryAA Every single thing you read about the OGTT tells you that you must observe the correct protocol to get accurate results. Among other things, this includes >150g carbs for 3 days prior with normal exercise. Just a reminder.

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Yes I know- I saw that on the package as well.

By " accurate results " it means -

Results for a range of population eating more than 150g carbs per day - not an actual 150g cabs per day - or the relevant equivalent amount for a person who is 5 ft 2 or 6 ft 5 - so even under the conditions as described the number could vary dramatically depending on BMI, height,actual carb ingestion or even what someone might consider to be "normal exercise".

All of those things mean that whoever the most important measurement is not against anyone else, ( as it is for your own lipid profile) It is against yourself over time which may or may not include actions you take yourself to try and improve your own insulin response for example your LCHF diet or your exercise regime .

For example if you originally never exercised at all , and you did two tests the first with no exercise and the second with lots of exercise a year later - if the second results were much better that would still be good news because you are still actually responding better to the shock of the sugar than you were. I don't think its particularly relevant to know how it would have responded had you been behaving today as you were before because that is the very thing you gave up !

I don't see the point of actively seeking to behave as unhealthily as you were for the purposes of the test .

Bulk biker chose not to add in 150g of carbs daily - and I don't blame him, because 3 days of 150g will add immeasurably to the glucose burden and he didn't want to do that and nether will I.

Of course bulk biker's figures when he did the test were distorted compared to the overall data because he had not had 150g of carbs for three days first compared to these curves and so will mine be.

There is absolutely no doubt in my mind that by recording figures as low as he did , when starting off with no carbs at all - then his result - whilst being the same over shape but much lower than a standard diabetic shape is ASTONISHINGLY GOOD and pretty much shows that he has this thing beaten especially when coupled with a fasting insulin test of under 4 which puts him at the best end of the normal range for that too.

The fact that doctors use the OGTT to diagnose diabetes in people, doesn't change the fact that understanding the shape of your own diabetes curve when you already have diabetes and therefore possible insulin responses given the diet YOU eat, as opposed to one that is full of carbs, is not then interesting information in its own right. It should also be somewhat reassuring to see that the massive increase in the first 30 minutes is actually a similar experience that normal individuals experience and that WITHIN two hours he was actually in the same position as the "normal " curve. In fact given that the instructions state - test the blood sugar 2 hours after drinking and if that is all he had done, then it would have shown an entirely normal response. which coupled with the low fasting insulin figure means that its highly likely that if his doctor did not known he was diabetic then he would not be diagnosed as being so at this point. That is simply AMAZING and hats off to him for getting this far.

Bluetit1802 said:

Yes, a well observed answer. I agree with you. My Rapilose is already on order.

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Thanks I must admit I'm a bit nervous about what mine will be given I'm so much less down the road than @bulbiker, but I am also angry that no-one gave me the opportunity to know my starting point!

CherryAA said:

Thanks I must admit I'm a bit nervous about what mine will be given I'm so much less down the road than @bulbiker, but I am also angry that no-one gave me the opportunity to know my starting point!

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We can hold cyber hands

Looking on the bright side- if you are LCHF too, then we can build up a body of information that actually tracks insulin resistance as measured by Kraft curves on diabetic patients succeeding in controlling it via diet - that would be pretty cool !
Ultimately all of this stuff is important in the quest to cross that chasm of misinformation I mention elsewhere - onwards and upwards

Bluetit1802 said:

My Rapilose has just arrived. Shivers already.

I have decided not to eat carbs beforehand for several reasons. Even though the results will probably be dire, they will reflect my situation as it is now, eating how I do at the moment, and that is what matters. As you know, I have been planning this for a while, and for the life of me couldn't see how I would increase my carbs by all that amount for 3 whole days, and didn't fancy the end result of that as far as my BS is concerned.

I now have to decide when, because I need a morning when I know I can sit quietly for 2 hours without being disturbed.

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I have a freestyle monitor, so I will end up with real time results, its only been in a day so I will wait until next week to do it.

Its all been quite a mathematical journey for an accountant ! - I figured that given what I now know about my own triglyceride and glucose levels, somewhere, someone must have correlated the two - and sure enough they did

So I also found another way to measure your insulin resistance which you can also track through all your prior period blood tests to get a comparative. All you need is your fasting blood glucose and your triglyceride figures.

http://www.diabetes.co.uk/forum/threads/you-can-measure-your-own-insulin-resistance.126095/

The result are pretty much exactly as predicted ! would be interesting to see if other people's data correlates!