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Really Inaccurate Libre Readings
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<blockquote data-quote="Old Man 99" data-source="post: 2325474" data-attributes="member: 532631"><p>I've just started with the Libre system - I'm about 9 weeks in and I'm having a big accuracy problems which is now making me doubt the system.</p><p>The two sensors that came with the starter pack seemed to perform well. I never had any basis to doubt the readings as I was on a bit of a roller coaster. The daily graph looked more like the "Pepsi Max" ride at Blackpool than anything sensible.</p><p>I got a grip on my carb intake, shed a lot of weight, run 20K a week and the graphs look more acceptable. The Estimated A1C is down to 6.3% ("yipee") and I'm about 90% in range (4.0-7.0) for most days.</p><p></p><p>However, I'm now doubting the accuracy of the sensors due to repeated low readings - all reported to Abbott and I'm now on my fifth replacement sensor.</p><p></p><p>One sensor has been a failure out of the box, but the other 4 have the same failure characteristics.</p><p></p><p>I eat my evening meal, I get a corresponding rise in BG; it peaks then proceeds downwards and gets in to the 3.0 range.</p><p>I'm type 2 and I take no meds to push it that low, but down it goes.</p><p></p><p>I then do a finger prick test with the Optimum meter and it is normally a lot higher; by way of example, I crashed down to 3.1 but the Optimum was showing 5.0. If I get into the low 4's I feel it, so a) I know I'm not 3.1 and b) 5.0 sounds about right.</p><p></p><p>It then follows that I did 15 minute interval tests of the Libre compared to the Optimum allowing for the delay in Libre results. They are always at least 1.x lower on the Libre when it goes into the fault condition.</p><p></p><p>I left it over night; it seemed to recover, but when I did a comparison in the morning I was 6.5 on the Optimum and 4.7 on the Libre - again allowing for the result lag.</p><p></p><p>Phone call to Abbott; they are sending me a replacement which is good of them considering I'm self-funding.</p><p></p><p>However, my key issue is that I now doubt the accuracy of any of the readings and I'm loosing confidence in the system.</p><p></p><p>I really want it to work, as you can see from my opening paragraphs, it has been revolutionary for me.</p><p></p><p>I had a talk with the Abbott chap and again, he re-assured me there is nothing I can do with would affect the results and it was the sensor that was the issue.</p><p></p><p>He suggested speaking to the Diabetic Clinic, however I need a GP referral and that is not going to happen. He suggested I speak to the GP, but given GP's are overloaded, I expect to be turned away as the Libre is not something he has prescribed - so not his problem as such.</p><p></p><p>So, here I am reaching out to the community for their experiences or those little gems of knowledge that people discover along the way.</p></blockquote><p></p>
[QUOTE="Old Man 99, post: 2325474, member: 532631"] I've just started with the Libre system - I'm about 9 weeks in and I'm having a big accuracy problems which is now making me doubt the system. The two sensors that came with the starter pack seemed to perform well. I never had any basis to doubt the readings as I was on a bit of a roller coaster. The daily graph looked more like the "Pepsi Max" ride at Blackpool than anything sensible. I got a grip on my carb intake, shed a lot of weight, run 20K a week and the graphs look more acceptable. The Estimated A1C is down to 6.3% ("yipee") and I'm about 90% in range (4.0-7.0) for most days. However, I'm now doubting the accuracy of the sensors due to repeated low readings - all reported to Abbott and I'm now on my fifth replacement sensor. One sensor has been a failure out of the box, but the other 4 have the same failure characteristics. I eat my evening meal, I get a corresponding rise in BG; it peaks then proceeds downwards and gets in to the 3.0 range. I'm type 2 and I take no meds to push it that low, but down it goes. I then do a finger prick test with the Optimum meter and it is normally a lot higher; by way of example, I crashed down to 3.1 but the Optimum was showing 5.0. If I get into the low 4's I feel it, so a) I know I'm not 3.1 and b) 5.0 sounds about right. It then follows that I did 15 minute interval tests of the Libre compared to the Optimum allowing for the delay in Libre results. They are always at least 1.x lower on the Libre when it goes into the fault condition. I left it over night; it seemed to recover, but when I did a comparison in the morning I was 6.5 on the Optimum and 4.7 on the Libre - again allowing for the result lag. Phone call to Abbott; they are sending me a replacement which is good of them considering I'm self-funding. However, my key issue is that I now doubt the accuracy of any of the readings and I'm loosing confidence in the system. I really want it to work, as you can see from my opening paragraphs, it has been revolutionary for me. I had a talk with the Abbott chap and again, he re-assured me there is nothing I can do with would affect the results and it was the sensor that was the issue. He suggested speaking to the Diabetic Clinic, however I need a GP referral and that is not going to happen. He suggested I speak to the GP, but given GP's are overloaded, I expect to be turned away as the Libre is not something he has prescribed - so not his problem as such. So, here I am reaching out to the community for their experiences or those little gems of knowledge that people discover along the way. [/QUOTE]
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