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Question about OGTT

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Lorrainee123

New Member
Hello

I recently had a health assessment done at a private clinic as I've been ill for years. They measured lots of things including glucose sensitivity and insulin resistance. They weren't blood tests but magnetic/electronic tests to measure whether your organs were working on a cellular level. The clinician said I had high glucose levels, low insulin and insulin resistance.

This really concerned me so I researched and have done some tests.
HbA1C range 20-42 31mmol/mol
Glucose fasting 4.9 mmol/L
Medichecks doctor said the HbA1c was normal indicating I don't have diabetes.

C-peptide range 1.1-4.4 ug/L 0.89
Indicating low insulin levels.

I did an OGTT this morning with a blood glucose monitor following the instructions below.


I was 'normal' if I went by the official advice in the thread but not if I was comparing myself to a non-diabetic at 45 minutes and 2 hours and my level seemed to take a long time to go back to the original reading. Also the readings didn't seem that accurate but there seemed to be a peak and a fall. Please could you tell me if these are normal:

Fasting level 5.2
Drank the lucozade
15 mins 6.8
30 mins 7.1
45 mins 5.4 seemed strange so re-tested 7.1
1 hour 7.4
1 hour 15 5.0 again seemed strange so re-tested twice 5.8 6.7
1 hour 30 6.1, 5.8
1 hour 45 5.7
2 hours 6.4
2 hours 15 6.3
2 hours 30 5.4, 6.3, 6.2
2 hours 45 5.2, 5.3
3 hours 5.9, 6.0
3 hours 30 5.7
4 hours 15 6.2, 5.3

Thank you
 
Welcome @Lorrainee123 🙂 Was this private clinic a complementary health clinic? I’ve never heard of magnetic/electronic measuring of organs on a cellular level.

Your results look fine. Your HbA1C is, indeed, normal 🙂 Blood sugar naturally goes up and down through the day and night. The old way of diagnosing diabetes was two random tests over 11.1. You can see that your results are well below that too. The blood glucose meters you buy aren’t for diagnostic purposes - the HbA1C is the diagnostic test. You ‘passed’ that and it didn’t show you had diabetes.

I hope you find an answer as to what’s causing your sub-optimal health. It must be wearing to feel unwell but not know why.
 
Yes it's not a conventional medicine clinic; it's more natural I think. Okay that's great.

Do you know why my c-peptide would be low because according to diabetes uk it should be between 0.17-0.9 nmol/l and mine's the equivalent of 0.05 nmol/l if I've done the calculation right?

Is that normal for it to take that long to go back down to normal after having the Lucozade? I didn't eat anything else during that time.

Thank you; yes it's not easy but I seem to be finding some answers lately.
 
For the C Peptide, you need to check the target range on your test. I had mine done and the clinic told me to look at the range given on the results form. I think some tests can vary depending on the lab and the units used.

Personally I’d avoid anything like that magnetic testing for diagnostic purposes. My friend has something similar done for allergies and they got it completely wrong. Go by your GP’s tests. You could also ask your GP surgery if you have any concerns about the C Peptide result.

It’s hard when you don’t have a diagnosis. I’d approach it systematically - which you might well be doing anyway. Make a list of tests and results, and plod on. I hope you find an answer soon. Keep an open mind and keep going.
 
C-peptide range 1.1-4.4 ug/L 0.89. It's below range and the lab put the result in red.

My diabetes tests are all blood tests. But I hear what you're saying about the clinic. I went there with an open mind but she really worried me talking about insulin resistance and high glucose.

Thanks, I might tell my GP but they've all been next to useless so I've been trying to fix myself for years. Think I'm slowly getting there.
 
I understand the desire to fix yourself. I’ve had poor service from health professionals before. At least you have something specific to ask the GP - the red highlighted C Peptide result. Maybe that’s a test that you could have repeated?
 
Thank you very much for your help. Yes I probably will tell my GP, see what he says.

So the long time for the blood glucose level to drop is normal? Just checking. Thanks
 
Last edited:
Lorrainee123 said:
C-peptide range 1.1-4.4 ug/L 0.89. It's below range and the lab put the result in red.

My diabetes tests are all blood tests. But I hear what you're saying about the clinic. I went there with an open mind but she really worried me talking about insulin resistance and high glucose.

Thanks, I might tell my GP but they've all been next to useless so I've been trying to fix myself for years. Think I'm slowly getting there.
Click to expand...
Some labs have a lower limit of 0.5.
It can vary depending of what you've been doing, eating, beforehand.
 
Labs must have different normal ranges depending on how they conduct the test and how the sample is taken as the normal range for C-peptide I found was 0.5-2.72 micrograms per litre but tests conducted by the labs that samples are sent by a GP will have to conform to a standard.
Your HbA1C is at the low end of normal non diabetic range so with a C-Peptide which appears to be low and HbA1C low, I think you should get advice from a G P as it could be something unrelated to diabetes.
 
Lorrainee123 said:
Thank you very much for your help. Yes I probably will tell my GP, see what he says.

So the long time for the blood glucose level to drop is normal? Just checking. Thanks
Click to expand...

I’m not a doctor, just a person with diabetes, but I wouldn’t say that drop speed is abnormal.
 
Leadinglights said:
Labs must have different normal ranges depending on how they conduct the test and how the sample is taken as the normal range for C-peptide I found was 0.5-2.72 micrograms per litre but tests conducted by the labs that samples are sent by a GP will have to conform to a standard.
Your HbA1C is at the low end of normal non diabetic range so with a C-Peptide which appears to be low and HbA1C low, I think you should get advice from a G P as it could be something unrelated to diabetes.
Click to expand...
is that 0.5-2.72 ug/l or nmol/l because mine is in ug/l and most of the diabetes uk sites seem to be in nmol/l? Okay thank you; yes I'm going to make an appointment to check it out.
 
Lorrainee123 said:
I found that range too but I must have done my calculations wrong as I got a lower figure. So hopefully it's not as low as I thought but I'll still get it checked out.
Click to expand...
The normal range given in your test results don't match the normal range on other web sites, they are given either in nmol/l or ng/ml which is the same as ug/l.
 
Leadinglights said:
The normal range given in your test results don't match the normal range on other web sites, they are given either in nmol/l or ng/ml which is the same as ug/l.
Click to expand...
I meant I'd found the correct range for c peptide on the Diabetes UK site in nmol/l and tried to convert my ug/l figure to see if it was in that range but must have made a miscalculation.

Normal range​

  • The normal range for a c-peptide test is: 0.51 to 2.72 nanograms per millilitre (ng/mL)
  • This may also be expressed as: 0.17-0.90 nanomoles per litre (nmol/L)
 
Lorrainee123 said:
They weren't blood tests but magnetic/electronic tests to measure whether your organs were working on a cellular level. The clinician said I had high glucose levels, low insulin and insulin resistance.

This really concerned me so I researched and have done some tests.
HbA1C range 20-42 31mmol/mol
Glucose fasting 4.9 mmol/L
Medichecks doctor said the HbA1c was normal indicating I don't have diabetes.
Click to expand...

Was the clinician who said you had high glucose levels using the magnetic/electronic results?

If so it doesn’t sound as if those were completely reliable, since your blood tests (HbA1c and fasting capillary glucose) are within the normal range.

Unless I have misunderstood, it looks like you’ve been worried for no reason. :(
 
everydayupsanddowns said:
Was the clinician who said you had high glucose levels using the magnetic/electronic results?

If so it doesn’t sound as if those were completely reliable, since your blood tests (HbA1c and fasting capillary glucose) are within the normal range.

Unless I have misunderstood, it looks like you’ve been worried for no reason. :(
Click to expand...
Yeah that's right. I've been quite worried for the last few weeks and have bought all the tests I could find. All the results came today so it's a bit of a relief.

The only thing they might have got right is the low insulin because of my low c peptide but nothing else.
 
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