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This is indeed inexplicable.

M

mysorian

Well-Known Member
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52
Type of diabetes
Treatment type
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I have been trying to regulate glucose in the blood for many years. 99% of the time the tests to determine glucose were pin-pricks and the strip or on blood that was drawn in a doctor's office and later analyzed in the laboratory. Recently I have tried CGM.

During lunch, I tried to:
1. start off with a tbsp of apple cider vinegar in three-fourths cup of water
2. Some 20 minutes later had lunch (31 grams of Fox-tail millet rice with rasam (Indian-style soup), 51 grams of cooked Mung beans, 25 grams of avocado, cucumber, and onion salad in olive oil), 1 tbsp of yogurt).
3. 1 tbsp of apple cider vinegar.

After two hours I measured 194 mg/dL of glucose in the blood with a one-touch strip.

This was indeed surprising and turbo-charged my skepticism. Apple cider vinegar should not have raised my blood. But all the other ingredients that I eat most days do not raise my glucose level to exceed 140 after two hours.

Can anyone make sense?
 
mysorian said:
After two hours I measured 194 mg/dL of glucose in the blood with a one-touch strip.
Click to expand...
Assuming the strip is from a glucometer then I would do a second test if the result was much higher than expected. Glucometers just aren't that accurate.
 
What is the confidence level in glucometer measurements? One more prick means more pain, will it be 10% or 20% less?
 
Every glucometer is supposed to work to a given tolerance, callen the acceptable error or something similar.

If I recall correctly (I don't have my reference book with me) for the UK this is no more than 5% error, 95% of the time. In other words 19 out of 20 readings will be within 5% of the true blood glucose value. A true value of 100mg/dl could therefore (for the 19 of 20) produce a result of anything from 95 to 105.

If you normally and consistently get around 140mg/dl from that meal, then it starts to look like a rogue 1-in-20 result.

I would usually either immediately restest with a result like that, or ignore it. Generally I don't test for very familiar foods because the result will usually be exactly the same as many times before, or a rogue result. Neither adds much to knowledge.
 
I ignore this outlier. Do you often get 'Rogue results'? If so, that 95% of the times nor more than 5% is in danger.
 
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