You may want to consider increasing your carbs to "normal" levels for a few days prior to testing of your OGTT may be off. Apparently we can get physiological (temporary) insulin resistance eating very LCHF, meaning your BG may skyrocket more than is normally would after the drink... I guess its a bit of shock to the body after a while of low carb. I'm not 100% sure on that... I am sure others will chime in.

I would just suggest a vigorous walk after leaving the appointment, especially if you aren't there for a couple of hours on a OGTT. You may as well burn those carbs as soon as possible. I can't think of anything else to minimize the impact besides fasting.

If you do lipids, I would go for HDL and triglycerides. If you get LDL, perhaps ask if they can separate it into pattern a and b.

Perhaps tests on inflammation like CRP or Lp a? Sometimes these go down on a LCHF diet.

@RalfLott Look forward to hearing how this test goes, as I'm considering something similar...

Ah gotcha. I thought maybe it was the actual OGTT test to check BG at the various times after the drink rather than SIBO testing alone.

Good luck with it!

I just had the OGTT (I'm 17 weeks pregnant) and I "failed" it miserably, emphasis on the miserably. 45 minutes in I had a pounding headache that took three days to go away. My blood glucose was 191 at the one hour mark and it took the rest of the day to come back down. My doctor said she expected as much because she knows I eat lower carb (about 100-150 gm a day throughout this pregnancy) but the test is really designed to see how your body reacts to a sugar dump and not necessarily to your normal eating habits. It was definitely a shock to my body (the doctor warned me it would be). Drink tons of water after the test is over- I went through two gallons and that seemed to calm the headache to a dull ache rather than feeling like somoene wedged an axe into my brain. This reaffirmed that I can never ever go back to the way I used to eat.

Hope the insights of the test make that headache worth it

RalfLott wrote: »

Thx. We shall see....

It was technically a SIBO test, not an OGTT by design, but still you'd think they'd monitor BG levels of known diabetics. But nooooo!

I was fortunate to remember to bring my own BG meter and came away with at least one important life lesson, to wit:

Don't chug heavy syrup on an empty stomach!

All of you. Ty for sharing your experiences.

As long as I live, I never want to go near any artificially orange sugary drink again. That scarred me for life. They told me I could walk laps around the waiting room but that I couldn't leave their sight because I could pass out. Had they said as much before I consumed the sludge I would have run out screaming.

RalfLott wrote: »

dtobio wrote: »

As long as I live, I never want to go near any artificially orange sugary drink again. That scarred me for life. They told me I could walk laps around the waiting room but that I couldn't leave their sight because I could pass out. Had they said as much before I consumed the sludge I would have run out screaming.

Hmm. Cup o' sludge v. plate of broken glass.... choice not obvious.

The protocol you describe... Whew.

I would think if you didn't pass out from sludge shock upon the first sip of the stuff, then merely going for a stroll shouldn't have much effect on your consciousness.

The label should say "cup o' sludge"

I could see not letting me get in the car and drive around, but would a few laps around the parking lot really have been such an issue? Apparently, so it was me and a very kind 85 year old woman who was walking around the waiting room alongside me, hoping it inspired her bladder to cooperate with a urine sample. Truly an experience I will NEVER forget, on many fronts!