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Re: Freestyle Glucose Meter: Approximate Error Correction?
| oldal4865 | 12 Oct 2005 16:46 |
Thelma Lubkin wrote in message ...
>: Thelma Lubkin <thelma@alpha2.csd.uwm.edu> schrieb:
>
[quoted text clipped - 4 lines]
>:> correction would go in, and better yet a back of the envelope
>:> algorithm for a reasonable guess?
There is a way to correct. The manufacturer figured it out when he
assigned the code. However, the code number is arbitrary and has nothing
to do with the correction.
Code 17 might read 20% higher at low blood sugar and 10% higher at high
sugar; or exactly the opposite; or exactly 17.5% lower at all sugars,
or just about any other combination you can think of.
You might call the strip manufacturer, and they might tell you. I suspect
they won't but they might.
Caution: I expect a question like that to totally baffle the bright-eyed,
cheerful but naive customer service rep. It's really a question for the
folks in the Quality Control Lab. They tested that batch of strips over
a wide range of blood sugars, then assigned a code which most nearly
matched the particular calibration equation needed for that strip.
Regards
Old Al
|
| Thelma Lubkin | 12 Oct 2005 15:41 |
Anja L?nge <anja.laenge@gmx.de> wrote:
: Thelma Lubkin <thelma@alpha2.csd.uwm.edu> schrieb:
:> My husband just noticed that he's gone through about 20 strips with
:> his Freestyle blood glucose monitor code set to 17 when it should
:> have been set to 12. He's not expecting to correct those readings with
:> any precision, but does anyone know at least what direction the
:> correction would go in, and better yet a back of the envelope
:> algorithm for a reasonable guess?
: No, but why don't you find out yourself? Do threee tests at
: different times,
: each test with two strips, one set to code 17 and one to code 12. Either
: there is a pattern or there is not... and please tell us about your
: findings
: ;-)
He did this for *one* test and the code 17 returned a value
that's about 11% lower than the code 12 reading. If I could
convince him to explore this any further I wouldn't have
posted.
--thelma
: Anja |
| Anja Länge | 12 Oct 2005 15:18 |
Thelma Lubkin <thelma@alpha2.csd.uwm.edu> schrieb:
> My husband just noticed that he's gone through about 20 strips with
> his Freestyle blood glucose monitor code set to 17 when it should
> have been set to 12. He's not expecting to correct those readings with
> any precision, but does anyone know at least what direction the
> correction would go in, and better yet a back of the envelope
> algorithm for a reasonable guess?
No, but why don't you find out yourself? Do threee tests at different times,
each test with two strips, one set to code 17 and one to code 12. Either
there is a pattern or there is not... and please tell us about your findings
;-)
Anja
|
| Thelma Lubkin | 11 Oct 2005 23:25 |
My husband just noticed that he's gone through about 20 strips with his
Freestyle blood glucose monitor code set to 17 when it should
have been set to 12. He's not expecting to correct those readings with
any precision, but does anyone know at least what direction the
correction would go in, and better yet a back of the envelope
algorithm for a reasonable guess?
thanks, --thelma
|
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