Re: home GTT - 75 grams glucose?
- From: quester@xxxxxxxxxxxxxx (Harold Groot)
- Date: Tue, 10 Feb 2009 09:22:54 GMT
On Sun, 8 Feb 2009 22:44:31 -0800, skinny <no@xxxxxx> wrote:
Is this number right for the US -- 75 grams of glucose?
<I>
http://www.endocrineweb.com/diabetes/diagnosis.html
The person being tested starts the test in a fasting state (having no food
or drink except water for at least 10 hours but not greater than 16 hours).
An initial blood sugar is drawn and then the person is given a "glucola"
bottle with a high amount of sugar in it (75 grams of glucose), (or 100
grams for pregnant women). The person then has their blood tested again 30
minutes, 1 hour, 2 hours and 3 hours after drinking the high glucose drink.
For the test to give reliable results, you must be in good health (not have
any other illnesses, not even a cold). Also, you should be normally active
(for example, not lying down or confined to a bed like a patient in a
hospital) and taking no medicines that could affect your blood glucose. The
morning of the test, you should not smoke or drink coffee. During the test,
you need to lie or sit quietly.
http://www.endocrineweb.com/diabetes/diagnosis.html
</I>
skinny
Those are the standard numbers I've always seen. However, when I did
my own home GTT I tested every 15 minutes for the first couple of
hours. This gives you a lot better chance of locating the real peak
reading for your own information. Doing this will generally give you
a significantly higher reading than just using the 30m/1h/2h/etc. (I
also took it out to 5 hours rather than just 3.)
Good doctors KNOW they are probably going to miss the peak just
reading at 1 hour and 2 hours, so they should be allowing for it when
making a treatment plan. If you want to compare your readings to
those of a standard GTT you should probably look at just the standard
times to take readings. But while the doctors might look at those
standard times and say "Hmmmm, the two high readings were (X) and (Y),
the actual peak was PROBABLY (Z)", you would know much more closely
what your actual peak really was. You could even do more frequent
tests as you approached the peak to really nail it down (it will
usually only stay at the absolute peak for a couple of minutes).
Of course, the minimum is also important. So you can do the same
thing to find out your ACTUAL minimum instead of making a guess based
on fewer data points. Again, the actual minimum tends to be of very
short duration.
Note - I also found it difficult to obtain the standard glucose
solution when I tried it. Having had a previous GTT in a doctor's
office that just showed just Impaired Glucose Tolerance (not
full-blown Diabetes) which had not gotten any worse since the previous
test (per daily tests) I knew that I would not faint (from reactive
hypoglycemia), would not get sick, etc. - but the people who might be
able to supply you with the standard syrup will not know this for
certain and may not be willing to take your word for it that you will
do the test in a safe manner. They're afraid someone might take the
syrup, then decide to drive somewhere and pass out behind the wheel -
then sue them if they survived the crash.
.
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