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Freestyle Libre Sensor: highly inaccurate??
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<blockquote data-quote="Ledzeptt" data-source="post: 1729785" data-attributes="member: 160898"><p>I’ve been using the Libre for about a year; so over 20 sensors including 3 faulty ones that Abbott replaced. A few points from my experience:</p><p></p><p>1. At present, Asda pharmacy are selling sensors for £44 IF YOU can show you have diabetes. Plus they can get them within 2 days (Abbott are taking 3 weeks to deliver.)</p><p></p><p>2. The first 24 hours of a new sensor is very inaccurate so I don’t activate mine for 24 - 48 hours, else it’s a waste of money.</p><p></p><p>3. Sensors do not measure blood glucose, but the software tries to predict a similar reading. There is often a 10- 15 min delay behind a finger prick blood glucose (BG) reading. This only matters if BG is falling/rising quickly. Sensors are also less accurate when having/close to a hypo, but at least I get more warning of an impending hypo.</p><p></p><p>4. Typically, the sensor reading is 0.5 to 1 mmol below my BG reading, so I see this as being on the safe side. I only had one sensor that reported higher readings than my BG meter and that was a faulty sensor. </p><p></p><p>5. I was in hospital a few weeks ago and had a particularly accurate sensor. It was usually the same or within 0.1 mmol of the hospital’s BG meter (that they calibrated every time) - very impressive!</p><p></p><p>Generally, I find the Libre to be accurate and “life changing” in managing my diabetes and also reducing stress/anxiety. </p><p></p><p>Ps. I self fund and have no connection to Abbott.</p></blockquote><p></p>
[QUOTE="Ledzeptt, post: 1729785, member: 160898"] I’ve been using the Libre for about a year; so over 20 sensors including 3 faulty ones that Abbott replaced. A few points from my experience: 1. At present, Asda pharmacy are selling sensors for £44 IF YOU can show you have diabetes. Plus they can get them within 2 days (Abbott are taking 3 weeks to deliver.) 2. The first 24 hours of a new sensor is very inaccurate so I don’t activate mine for 24 - 48 hours, else it’s a waste of money. 3. Sensors do not measure blood glucose, but the software tries to predict a similar reading. There is often a 10- 15 min delay behind a finger prick blood glucose (BG) reading. This only matters if BG is falling/rising quickly. Sensors are also less accurate when having/close to a hypo, but at least I get more warning of an impending hypo. 4. Typically, the sensor reading is 0.5 to 1 mmol below my BG reading, so I see this as being on the safe side. I only had one sensor that reported higher readings than my BG meter and that was a faulty sensor. 5. I was in hospital a few weeks ago and had a particularly accurate sensor. It was usually the same or within 0.1 mmol of the hospital’s BG meter (that they calibrated every time) - very impressive! Generally, I find the Libre to be accurate and “life changing” in managing my diabetes and also reducing stress/anxiety. Ps. I self fund and have no connection to Abbott. [/QUOTE]
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