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How do blood glucose meters work?

Discussion in 'Blood Glucose Monitoring' started by Rabdos, Sep 4, 2017.

  1. Rabdos

    Rabdos Type 2 · Well-Known Member

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    Can anyone explain to me please how do blood glucose meters work?

    How is the glucose absorbed to the sensor?
    How is the glucose converted into electronic signal?
    How is the glucose calculated per volume of blood?
     
  2. Mr_Pot

    Mr_Pot Type 2 · Well-Known Member

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    You will find typing "How do blood glucose meters work" in Google will give lots of information.
     
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  3. SockFiddler

    SockFiddler Type 2 · Well-Known Member

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    You know, generally I don't like "Go ask Google" answers but, in this case, I sorta have to agree with @Mr_Pot : we're all just folks with diabetes here, none of us build, design, maintain or manufacture our meters. Google is a far better source of technical stuff than us...

    ... and this is the moment when someone who does build, design etc glucometers posts :D
     
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  4. Mr_Pot

    Mr_Pot Type 2 · Well-Known Member

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    I also don't usually give "Try Google" answers but I typed it into Google and there were so many references I didn't want to read them all, select the best one (in my opinion) and quote it. Better the OP should see all the information for himself.
     
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  5. NoCrbs4Me

    NoCrbs4Me I reversed my Type 2 · Well-Known Member

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    Magic!!
     
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  6. Fleegle

    Fleegle Type 2 · Well-Known Member

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    I haven't built a meter but I did study electronics and they basically work through passing a small electrical current through the blood and measuring resistance I think. It all gets a bit complex because the test strips contain chemicals which transform the blood into something that can be measured.

    So a combination of chemical change through the strip then passing an electrical current. I think....
     
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  7. Bluetit1802

    Bluetit1802 Type 2 (in remission!) · Guru

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    Spoil sport! ;)
     
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  8. Tipetoo

    Tipetoo Type 2 · Expert

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  9. Fleegle

    Fleegle Type 2 · Well-Known Member

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  10. Tipetoo

    Tipetoo Type 2 · Expert

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    Most people keep the strips in the container till they need, not laying loose on the table etc. :)
     
  11. Fleegle

    Fleegle Type 2 · Well-Known Member

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    Yes - it says to do that on the pack. But each time you open the lid - it gets contaminated - which is why I guess you only have so many days before the strips need to be used. At the moment, because I use a Libre and do not test that often, I use the ones in tinfoil. Bit expensive but I am so clumsy I have tipped a whole pot of SD code free out and had to throw them away....
     
  12. Tipetoo

    Tipetoo Type 2 · Expert

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    I go through a tub of fifty strips a week, so no worries there.

    I have lost the lot on opening the pot over the table, but they went back in as they were not exposed to any moisture.
     
  13. Bluetit1802

    Bluetit1802 Type 2 (in remission!) · Guru

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    The ones in foil are awful. Getting them out of the foil I must contaminate them, and sometimes bend them. I threw mine away. I just use the accuchek cassettes now. No handling.
     
  14. noblehead

    noblehead Type 1 · Guru
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    Its more like months than days @Fleegle
     
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  15. ladybird64

    ladybird64 Type 2 · Well-Known Member

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    I'm quite happy to suggest Google!
    If you can ask a ton of non diabetes related questions here (then rubbish the answers as you normally do), you can ask Google instead!
    It is your friend after all:D
     
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  16. Fleegle

    Fleegle Type 2 · Well-Known Member

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    I am not sure which ones you use, I use the abbott ones. They have a triangle strip on the side - you tear down, really easy and it reveals the circuit end keeping the business end still in tin foil. You insert into the meter and pull the tin foil off and you have a perfect - contamination free - strip that has had no chance at all of having any contamination.
     
  17. Bluetit1802

    Bluetit1802 Type 2 (in remission!) · Guru

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    I was clearly doing it wrongly!
     
  18. Tipetoo

    Tipetoo Type 2 · Expert

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    I decant my Abbot Freedon Lite strips into a Accu-Chek Performa strip pot, as I cannot get my fingers into the Abbot strip pot to get a single strip out. They also come out the right way to stick in the meter. :D
     
  19. nomoredonuts

    nomoredonuts Type 2 (in remission!) · Well-Known Member

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    Now I know how hard those little strips work, maybe I won't swear at them quite so much when I c*ck up a test!
     
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