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Old Tue, Oct-12-21, 18:22
doreen T's Avatar
doreen T doreen T is offline
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Posts: 37,194
 
Plan: LC paleo/ancestral
Stats: 241/188/140 Female 165 cm
BF:
Progress: 52%
Location: Eastern ON, Canada
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Quote:
Originally Posted by JeanM
Anyone have info on the best glucose tolerance test to use? I will be paying out of pocket. I see you drink the glucose load and then they test. It gives me 2,4 or 6 specimen options. Thank you for any info!

Here's an article at dietdoctor.com explaining blood sugar measurement, including OGTT (oral glucose tolerance test) .. https://www.dietdoctor.com/blood-sugar. Pay particular attention to section #7
Quote:
7. How a low-carb diet affects blood sugar measurements

If you are on a low-carb diet, you may find that some ways of measuring blood sugar will not provide you with “normal” levels.

For example, fasting blood sugar levels may be slightly above normal. This may be due to “adaptive glucose sparing” and “the dawn phenomenon.”

Your fasting blood sugar levels may be elevated because your liver is making extra glucose to prepare your body for the day.

If you are concerned about these levels, ask your healthcare provider to check your HbA1c, which reflects your average blood sugar control over 2-3 months (more on this below).

If you’re on a low-carb diet, your HbA1c will likely be lower than your fasting blood sugar levels would predict, since your blood sugar probably doesn’t increase much after meals.

For people who have been on a low-carb diet for a long time, an OGTT may mistakenly diagnose you as having diabetes. Because your body is fat adapted and no longer using sugar as its main fuel, you may have an exaggerated blood sugar response to the glucose drink. If that occurs, you may fail the test and be given a diabetes diagnosis when you actually do not have the condition.

If your doctor orders an OGTT test and you want to take it, start consuming carbs and sugar about three days before the test.

FWIW, way back in 1992, Dr Atkins also recommended upping carbs to 150g per day for 3 days prior to taking the OGTT. However, he cautioned to avoid high carb - high fat foods such as pizza, burgers, fries, pie or ice cream. Up the carbs, not the fat

Just curious, why are you doing the OGTT? Are you worried about diabetes??

Anyway, hope this has been helpful

Doreen
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