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Prediabetes I'm honestly baffled and confused - Help needed

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Woofer

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Please bear with me as this is my first forum post here. Was wondering if anyone can be of any help.

I decided to do a full blood test a year ago (October 2014) and my results were not encouraging. My FBG was 6.7 with borderline high cholesterol. My GP asked me to redo the test together with a Hba1C. I was so worried that I barely ate during the three days before the test. My FBG went down to 6.37 and my HBA1C was at the lower limit of the normal range.

I weighed 95 kgs and so embarked on a weight loss and exercise programme. In February I did a full blood test again and my FBG result was once again 6.7, normal HBA1C and my cholesterol was in the normal level. I decided to buy a blood glucose monitor (Bionime GM550). I measure my fasting blood glucose every morning and it's always between 4.9 and 5.5.

I continued with my fat loss and exercise programme and I now weigh 78kgs (BMI 24.8). Having said that I still have close to 17% of body fat and a waist of 36inches.

Last month I did an OGTT test and my FBG was 6.8, one hour blood result 11 and two hour blood result 4.6. I also did the HBA1C was once again well into the normal range value.

I'm now really confused as to why my lab FBG is always high while my blood monitor readings are in the normal range. My OGTT and HBA1C are also good. Any help and advice as to how I can reduce the lab's FBG would be greatly appreciated
 
Firstly those figures that you've posted aren't quite as bad as you are imagining them to be. Yes they are a little on the high side in the pre-diabetic range, but getting your weight down, a sensible LCHF diet and regular exercise will benefit you and in the long term it can help prevent you going on to develop FULL diabetes.
As for the difference in your home B/G reading and those from the Lab, well this is understandable also, when you consider that home B/G meters can vary in accuracy by + or - 10% quite easily and your home B/G readings will depend when you have taken them and what you have eaten between then and the time when the reading was taken. Also bear in mind that the HbA1c reading is linked to your home readings but isn't the same thing. It differs in that it gives an average reading of you B/G over the previous 12 weeks, where as your home B/G meter is designed to show only the reading at that particular time instant.
Your OGTT test looks pretty good, the 11 mmol/L reading taken 1 hour after drinking the Glucose Drink is perfectly normal and your bodies metabolism seem to have dealt well with this as you readings fell back to 4.6 mmol/L shortly after that initial high peak.
All in all, though none of us here on this site could diagnose your overall diabetic outcome, in general it would not seem too bad, but you will need to monitor things carefully to ensure that you head in the right direction and hopefully then come out of the pre-diabetic band and down within the safe non-diabetic region.
All the best for the future.
 
I would say those figures are fine and effectively normal. Fasting blood tests are of little use due to the overnight liver dump of glycogen that happens to most of us. The 2 hour post meal reading is the more useful and certainly the Hba1C.
 
This is only anecdotal evidence from posts on various websites, but low carbers without diabetes do sometimes seem to get high FBG. The theory I've seen, is that it's peripheral insulin resistance with the brain reserving available glucose for itself. That could be entirely wrong because in the last ten years we have found that the brain produces insulin to regulate glucose in the brain.

But high FBG in people without diabetes who do LCHF does happen.
 
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