I think the answer would be what your doctor tells you. My lab
instructions have always been 12 hours for FBG.

--
Cheri

Peter wrote in message ...

<snip>

They say "no eating after midnight".  I think that is true, but not
sufficient.  I think you need to be hungry when you get up.  I say this
because of an event I just had where I ate a beef patty late at night.  In
my opinion I got insufficient sleep (4 - 5 hours) and checked my BG upon
getting up.  It was 20 points high.  I didn't feel hungry either.  Skipped
B'fast, got a 20 point high reading still.  Then 4-6 hours later I was back
to "normal".  (if there is such a thing)  I believe that the burger was
eaten "out of synch" with how I usually eat and wasn't really digested until
the next day.  When I woke up, my organs finished the job started the night
before.  I ate a late dinner one other time (a social thing) and I was up
the next day until lunch time.  Bottom line, I feel your system finishes the
job when you let it finish.  Eat too much too late and fasting has been
accomplished after that food has been processed, next day is necessary.

Therefore, if you are hungry when you awake, and fasted since 12am, most
likely you are in a "fasting" state.  I am interest in what others think
about this...
-Sax

8 hours.  You aren't supposed to eat after midnight and the labs open at
8 AM, right??

Dave

Thanks for the responses, but it still seems a little vague.   Who chose 8
hours and not 4 or 5 and why?  Does everyone's blood sugar stabilise by 8
hours?   What happens if you fast for 16 hours, or 20?   Do you suffer a
liver dump if you fast too long?  What exactly is FBG attempting to measure?

Peter