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Blood Glucose Monitoring
Very low readings on Freestyle Libre
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<blockquote data-quote="Scott-C" data-source="post: 1966796" data-attributes="member: 374531"><p>Hi, Tim, and I see you've just joined, so welcome to the forum!</p><p></p><p>What you describe cam be quite common on the first day.</p><p></p><p>When you attach the sensor, two things start happening.</p><p></p><p>First, you've just poked a big needle into your skin causing a microscopic bit of damage to the area.</p><p></p><p>Second, the sensor filament is in your body and is regarded as a foreign body.</p><p></p><p>So, repair mechanisms to repair the puncture spring into action, and so does foreign body response mechanisms to try to fight off the "invader".</p><p></p><p>Both of those mechanisms use cells which chew up glucose to fuel their work, so the glucose in the area will be depleted because they've ate it, so there is less for the sensor to measure, so it appears as a low.</p><p></p><p>Also, the filament can take a bit of time to settle in, so can be skew whiff.</p><p></p><p>What a lot of us do to get round these issues is attach the sensor and then leave it for about 12 to 24 hrs before activating it (the 14 days only starts counting down once you start it, so you don't lose any time).</p><p></p><p>Doing it that way, the 24 hrs gives the repair and defence responses time to settle down so they're not influencing the reading as much.</p><p></p><p>With yours, you might find that it settles down tomorrow.</p><p></p><p>If not, Abbot are normally quite good at replacing them if you give their helpline a phone.</p><p></p><p>They're definitely useful devices, no doubt about it, but some of the sensors can be plain off. If you use them for a while, you become more adept at identifying whether it's a "good" or "bad" sensor.</p><p></p><p>Even "good" sensors can run a bit too high or low, but provided it's consistently so against bg checks, it's easy enough to just mentally add or subtract the difference to get a clearer idea of what the actual number is.</p><p></p><p>There's also third party transmitters, blucon and miaomiao, which turns it into full on cgm, and the apps for those can be used to calibrate readings against bg checks - these can really tighten up readings.</p><p></p><p>Good luck, although it has flaws, it can be a real game changer omce you've sussed it out!</p></blockquote><p></p>
[QUOTE="Scott-C, post: 1966796, member: 374531"] Hi, Tim, and I see you've just joined, so welcome to the forum! What you describe cam be quite common on the first day. When you attach the sensor, two things start happening. First, you've just poked a big needle into your skin causing a microscopic bit of damage to the area. Second, the sensor filament is in your body and is regarded as a foreign body. So, repair mechanisms to repair the puncture spring into action, and so does foreign body response mechanisms to try to fight off the "invader". Both of those mechanisms use cells which chew up glucose to fuel their work, so the glucose in the area will be depleted because they've ate it, so there is less for the sensor to measure, so it appears as a low. Also, the filament can take a bit of time to settle in, so can be skew whiff. What a lot of us do to get round these issues is attach the sensor and then leave it for about 12 to 24 hrs before activating it (the 14 days only starts counting down once you start it, so you don't lose any time). Doing it that way, the 24 hrs gives the repair and defence responses time to settle down so they're not influencing the reading as much. With yours, you might find that it settles down tomorrow. If not, Abbot are normally quite good at replacing them if you give their helpline a phone. They're definitely useful devices, no doubt about it, but some of the sensors can be plain off. If you use them for a while, you become more adept at identifying whether it's a "good" or "bad" sensor. Even "good" sensors can run a bit too high or low, but provided it's consistently so against bg checks, it's easy enough to just mentally add or subtract the difference to get a clearer idea of what the actual number is. There's also third party transmitters, blucon and miaomiao, which turns it into full on cgm, and the apps for those can be used to calibrate readings against bg checks - these can really tighten up readings. Good luck, although it has flaws, it can be a real game changer omce you've sussed it out! [/QUOTE]
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