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Hello All,
This is a question that has been unanswered for me for several months now. This is a scary topic for me, as I think I have been too low on too many occasions, of the people who have passed out from the severity of low BG, does anyone know the approximate number in which they went lights out? I have reached 30-35 about a dozen times now, and felt close to passing out. I am just curious if everybody is different, or is there a general number in which the body shuts down?
I look forward to everyones responses.

Views: 277

Comment by brokenpole on February 4, 2012 at 12:38pm


I have been in the 20's and holding a coherent conversation with my wife one day, then be in the 30's and pasted out on another day. With me the number where I go lights out seems to depend a lot on how fast my BG is dropping.

I have been in the an ambulance on the way to the hospital after I wrecked my truck new Philadelphia Airport and they told me when they first tested me I was 17 and was fighting them while they were trying to IV me. I remember none of it.

Comment by Doris D on February 4, 2012 at 12:52pm

Barney I too am a whole lot like Sparkey there. But here lately I've given into that under 21 I might need some type of help! LOL!

Comment by garidan on February 4, 2012 at 1:05pm

Glucometers have errors: you read 30 but could be 24 or 36 so don't compare them, they are all too low numbers.
If BG drops quickly, you could measure that on your finger and have no sugar in the blood in your brain.
Sugar is not even in every part of your body, expecially if it varies fast. Usually in brain is 30% less than on your finger.

You pass out when you loose control, then sugar keeps going down and you can't do anything till brain cells starts to die because they have no more "fuel".
It takes the same time to die as when you are under water: you miss oxygen and brain cells die. A few minutes.

So, keep BG up for a few weeks and regain low BG awareness.

Comment by acidrock23 on February 4, 2012 at 1:19pm

I had a One Touch Ultra Smart and saw single digits on it a couple of times. I always make fun of the paramedics when they test me and go "your blood sugar is 47, OMG!!". I don't think there's an exact "lights out" number.

Comment by garidan on February 4, 2012 at 1:21pm

Your One Touch Ultra Smart measures too low ;-)
Zero is Zero

Comment by acidrock23 on February 4, 2012 at 1:41pm

That's possible too, since I wasn't exactly in any shape to run to the lab to get a "real" test. Unfortunately, I lost it when I forgot to zip my bike pouch so it's long gone now. I switched to the Ultra Minis that don't seem to show anything lower than 30s, or maybe 20s? I don't recall what my "record" is on these!

Comment by Betty J on February 4, 2012 at 3:49pm

Years ago when I passed out and woke up in ER they told me my bg was under 10.

Comment by barbraann on February 4, 2012 at 4:05pm

Under 10!Wow! I vary but the problem is if I'm truly "out" it takes awhile before I actually get a reading but like someone said, I've been as low as 27 and arguing with my husband that I'm fine! So to actually pass out, Who knows. I get into the 30's and not be out so I'm thinking it is probably in the low 20's before I actually go under.

Comment by Betty J on February 4, 2012 at 5:31pm

When I woke up I was 10 but no telling how low I really went. My husband said when he found me I was having a seizure...10 was where I was in the ER.

Comment by Brunetta on February 4, 2012 at 6:16pm

I was 22 when paramedics found me passed out on my living room floor one afternoon. But I have been standing and talking ( not coherently) at 19. Just depends on how fast the fall. I guess I would say I am "in danger' with any low under 40 or so..but I was able to handle a 34 on my own a couple of months sgo.. Hmm.. It is all so individual.. and dependent on a variety of factors ( insulin on board, prior physical activity, rate of fall, as mentioned. It is just hard to say.

God Bless,


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