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Blood Glucose Monitoring
Tips on making the Libre more accurate?
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<blockquote data-quote="Bill_St" data-source="post: 1290518" data-attributes="member: 310899"><p>It may well be OK to use other sites but remember that the back of the arm is the only site tested and approved by Abbott. Get the wrong CS rep. and they will not replace a sensor that faults when at another site (if you tell them....)</p><p>Also they will only accept comparative test strip readings from Abbott Libre Optium strips.</p><p></p><p>Libre CS say not to attach the sensor 24hrs before activation. They suggest no more than 3hrs. Quite a few people have suggested 24hrs but others don't. I have found 2-3 hours adequate time for my arm to recover from any trauma that would upset readings. There is a technique for trauma free attachment- press and hold down the applicator for 20-30 seconds. You are less likely to jump and stress the needle. It also gives time for the adhesive to work.</p><p></p><p>As mentioned, test strips themselves can vary by 10-20%. So it may not be the Libre sensor that is "wrong". 3mmol/l difference is not very significant at high levels. You can have a sensor reading an acceptable 1mmol high while the test strip is reading an "acceptable" 2mmol low.</p><p> The important usefulness of the Libre is comparisons and trends. See what sends you up and down. Learn. It can be lifestyle changing! As you may guess I am absolutely converted. Don't know what I would do without those readings and graphs. After 7 days the free Libre software download becomes particularly useful to see trends and A1c predictions.</p><p></p><p>Also hydration can be important. Drink 500ml of water and see if the reading is "better" 10 minutes later.</p><p>The sensor is measuring interstitial glucose. This is usually about 10 minutes behind blood glucose so wait 10 minutes before comparing your Libre reading to a strip reading.</p></blockquote><p></p>
[QUOTE="Bill_St, post: 1290518, member: 310899"] It may well be OK to use other sites but remember that the back of the arm is the only site tested and approved by Abbott. Get the wrong CS rep. and they will not replace a sensor that faults when at another site (if you tell them....) Also they will only accept comparative test strip readings from Abbott Libre Optium strips. Libre CS say not to attach the sensor 24hrs before activation. They suggest no more than 3hrs. Quite a few people have suggested 24hrs but others don't. I have found 2-3 hours adequate time for my arm to recover from any trauma that would upset readings. There is a technique for trauma free attachment- press and hold down the applicator for 20-30 seconds. You are less likely to jump and stress the needle. It also gives time for the adhesive to work. As mentioned, test strips themselves can vary by 10-20%. So it may not be the Libre sensor that is "wrong". 3mmol/l difference is not very significant at high levels. You can have a sensor reading an acceptable 1mmol high while the test strip is reading an "acceptable" 2mmol low. The important usefulness of the Libre is comparisons and trends. See what sends you up and down. Learn. It can be lifestyle changing! As you may guess I am absolutely converted. Don't know what I would do without those readings and graphs. After 7 days the free Libre software download becomes particularly useful to see trends and A1c predictions. Also hydration can be important. Drink 500ml of water and see if the reading is "better" 10 minutes later. The sensor is measuring interstitial glucose. This is usually about 10 minutes behind blood glucose so wait 10 minutes before comparing your Libre reading to a strip reading. [/QUOTE]
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