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What's acceptable in glucose meter descrepensies
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<blockquote data-quote="Marie 2" data-source="post: 2511519" data-attributes="member: 475037"><p>A meter is definitely more accurate. Although any meter can go whacky. And some meters are more accurate than others.</p><p></p><p>It would have been nicer to have been at the 11 than the 17! So the meter said an 11.6 and then an 17.5? Had you had any simple sugar within 15 minutes or so before or during those readings? Because your blood sugars can change fast from that. But you need to judge when your insulin was supposed to hit, any food hitting etc. If none of that, you might need a new meter.</p><p></p><p>You do have to allow for an amount of discrepancy. A lot of us acquire more than one meter so that if there is a question you can compare the readings on the two to see if they are close, they usually will never be exactly the same. I know several people like me when we get a blood test we will do a meter read at the same time to find out how accurate our meter is.</p><p></p><p>But a sensor is a whole different thing. First it reads interstitial fluid, not blood and there is a delay of anywhere between 10-20 minutes versus a meter which is off of a blood sample. On top of that a Libre sensor is notoriously off, it usually reads lower, anywhere from .3mmol-1.mmol lower on me. But the trick is, it will tell you what you are trending, so you can tell if you are trending steady, dropping, or going higher. It will give you an idea at any given time what your BG level is doing. The idea being even if inaccurate if you are at 11 or 17 or 24, you are too high??? But in any critical decision a meter is best to use.</p><p></p><p>And yes at higher numbers the sensor will be more inaccurate.They usually tell you to allow for a 20% inaccuracy. If it stays off for no reason you can call Abbot/Libre and they will replace it.</p></blockquote><p></p>
[QUOTE="Marie 2, post: 2511519, member: 475037"] A meter is definitely more accurate. Although any meter can go whacky. And some meters are more accurate than others. It would have been nicer to have been at the 11 than the 17! So the meter said an 11.6 and then an 17.5? Had you had any simple sugar within 15 minutes or so before or during those readings? Because your blood sugars can change fast from that. But you need to judge when your insulin was supposed to hit, any food hitting etc. If none of that, you might need a new meter. You do have to allow for an amount of discrepancy. A lot of us acquire more than one meter so that if there is a question you can compare the readings on the two to see if they are close, they usually will never be exactly the same. I know several people like me when we get a blood test we will do a meter read at the same time to find out how accurate our meter is. But a sensor is a whole different thing. First it reads interstitial fluid, not blood and there is a delay of anywhere between 10-20 minutes versus a meter which is off of a blood sample. On top of that a Libre sensor is notoriously off, it usually reads lower, anywhere from .3mmol-1.mmol lower on me. But the trick is, it will tell you what you are trending, so you can tell if you are trending steady, dropping, or going higher. It will give you an idea at any given time what your BG level is doing. The idea being even if inaccurate if you are at 11 or 17 or 24, you are too high??? But in any critical decision a meter is best to use. And yes at higher numbers the sensor will be more inaccurate.They usually tell you to allow for a 20% inaccuracy. If it stays off for no reason you can call Abbot/Libre and they will replace it. [/QUOTE]
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