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Meter Calibration

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#1
georgepds

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I've got a couple of one touch meters. The older ones consistently give a higher reading than the newest.

I remember these meters came with a calibration fluid. The meter recognizes the fluid if you use it in place of blood. Does anyone know if use of this fluid actually resets the calibration on the meter?

TIA
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#2
Masher

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I've got a couple of one touch meters. The older ones consistently give a higher reading than the newest.

I remember these meters came with a calibration fluid. The meter recognizes the fluid if you use it in place of blood. Does anyone know if use of this fluid actually resets the calibration on the meter?

TIA
--G


if you look at the bottle I think it tells you what the range of the reading should come in at for example ( 4.0 -7.0) just like on the test strip bottles I have 3 meters all one touch. I used the fluid only to see if my meter was reading correctly. I don't think it resets. How off are the number when you use them ? Also keep in mind the fluid does expire so that might have some effect on your meter calibration


here is a PDF link about the testing fluids http://www.lifescan....solution_ot.pdf
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#3
sarahspins

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The control solution isn't "calibration fluid" and the meter doesn't automatically recognize it as anything.. it isn't used to calibrate your meter, it's used for quality assurance. If you have a batch of test strips that tests outside the control solution range, then you may have a problem with the strips.
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#4
jps

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I think terms are getting mixed up. Are you sure it's not just quality control material instead of calibration fluid?

I don't know about old meters and how they were calibrated. Maybe they do use calibrators to set the curve instead of an algorithm as the current meters use.
"That which doesn't kill us makes us stronger" - Friedrich Nietzsche

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#5
georgepds

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if you look at the bottle I think it tells you what the range of the reading should come in at for example ( 4.0 -7.0) just like on the test strip bottles I have 3 meters all one touch. I used the fluid only to see if my meter was reading correctly. I don't think it resets. How off are the number when you use them ? Also keep in mind the fluid does expire so that might have some effect on your meter calibration


here is a PDF link about the testing fluids http://www.lifescan....solution_ot.pdf


Thanks for the link.. it looks like the cal fluid just checks that the meter response is in range, and is not used to recalibrate the meter. If things are out of range it could be the meter, the strips or the fluid from what i read

#6
jps

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Then that's quality control material. If it's out of range, as you stated, it could be the meter, the strips, or the QC material.

Most likely the strips (because a wrong calibration code was entered), then the QC material (may be expired or improperly mixed), then the meter.
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#7
fgummett

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Yes, I don't know of any home BG meters that we can calibrate (more's the pity) and as above; the Control Solution simply tests that the strips fall with a range -- often given on the test strip container * BUT I do recall someone posting before about a meter than could automatically detect when you used Control Solution instead of blood... I don't recall the make of BG tester though.

* For my Bayer Contour the current test strip container says "Normal Control Solution Ranges 106-146 mg/dL 5.9-8.2 mmol/L"

#8
fgummett

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Here it it.. the TRUEresult®... which includes in its features "Glucose control detection".

And the previous thread where it was mentioned: http://www.diabetesf...s-confused.html

#9
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SarahSpins said in part..

If you have a batch of test strips that tests outside the control solution range, then you may have a problem with the strips.


Ahhh, well, kind'ah, somewhat, in a sort'ah type of way, there'abouts.......

Doesn't it also depend upon the solution you're using? I know that "Bayer" has three different control range solutions.. and depending on which one you use is dependent on whether you regularly have "Low", "Normal", or "High" BG level readings.

With that being the case, it may NOT be the test strips at all. Right?

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#10
Bountyman

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SarahSpins said in part..



Ahhh, well, kind'ah, somewhat, in a sort'ah type of way, there'abouts.......

Doesn't it also depend upon the solution you're using? I know that "Bayer" has three different control range solutions.. and depending on which one you use is dependent on whether you regularly have "Low", "Normal", or "High" BG level readings.

With that being the case, it may NOT be the test strips at all. Right?

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No matter what level solution you use each level has a comparative number right on the strip container. I doubt someone would use a high-level solution expecting low-level numbers and blame it on the strips.

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#11
georgepds

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Y... BUT I do recall someone posting before about a meter than could automatically detect when you used Control Solution instead of blood... I don't recall the make of BG tester though...


It's been a while, but IIRC, the one touch ultra does that

#12
Bountyman

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I have an Accu-Chek Compaq Plus and it also knows if I'm testing with the control solution. It records it with a "control solution" icon on the screen and does not add the control solution test to 7, 14, and 30 day averaging done by the meter.

'Let thy food be thy medicine, and thy medicine be thy food.'
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