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Diabetes Soapbox - Have Your Say
Making the best of a bad situation... Which BG meter?
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<blockquote data-quote="jopar" data-source="post: 72083" data-attributes="member: 11712"><p>Meters of different makes, and of identical make can give slightly different readings for many reasons...</p><p></p><p>Some of it can be down to as Tubs mentioned whether they are using a whole blood or plasma to calculate the reading, along side any conversion software to calculate into a figure with a 10% tolerance to consider of accuracy…</p><p></p><p>But other factors can lead to different readings...</p><p></p><p>The process of determining what the BG is is based on electrical resistance within the test strip… Factors such as squeezing the finger, which causes more fluid to be mixed with the blood can, alter the resistance of the sample… Even using the same blood sample doesn’t over-come this, as even with the seconds that it take to either change the meter strip and prepare for a new test, or the time it takes to get another meter plonked into the blood, the blood as already started to dry out, and this can change the resistance of it… And effect the final reading...</p><p></p><p>I think the only chance of getting a near accurate comparison of two different meters would involve at leas a two man or 3 man efforts… So that you prick finger to get the blood sample, then have two people retrieve a test at the same time off the blood sample, with great speed and timing to ensure blood pick up is timed to perfection…</p><p></p><p>But best advice is to stick with one meter as much as possible and to a certain extent trust how your body feels…. If you think that what you are feeling isn’t what the meter is suggesting, then wash hands and retest… if this still suggests it’s inaccurate, then check the meter with a test solution from the manufactures...</p></blockquote><p></p>
[QUOTE="jopar, post: 72083, member: 11712"] Meters of different makes, and of identical make can give slightly different readings for many reasons... Some of it can be down to as Tubs mentioned whether they are using a whole blood or plasma to calculate the reading, along side any conversion software to calculate into a figure with a 10% tolerance to consider of accuracy… But other factors can lead to different readings... The process of determining what the BG is is based on electrical resistance within the test strip… Factors such as squeezing the finger, which causes more fluid to be mixed with the blood can, alter the resistance of the sample… Even using the same blood sample doesn’t over-come this, as even with the seconds that it take to either change the meter strip and prepare for a new test, or the time it takes to get another meter plonked into the blood, the blood as already started to dry out, and this can change the resistance of it… And effect the final reading... I think the only chance of getting a near accurate comparison of two different meters would involve at leas a two man or 3 man efforts… So that you prick finger to get the blood sample, then have two people retrieve a test at the same time off the blood sample, with great speed and timing to ensure blood pick up is timed to perfection… But best advice is to stick with one meter as much as possible and to a certain extent trust how your body feels…. If you think that what you are feeling isn’t what the meter is suggesting, then wash hands and retest… if this still suggests it’s inaccurate, then check the meter with a test solution from the manufactures... [/QUOTE]
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Making the best of a bad situation... Which BG meter?
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