I have been using the Libre 3 Continuous Glucose Monitor (CGM) for several months. Other than a few adhesive failures, it has performed satisfactorily. When it does show a sensor read error however, there is not much I can do but wait, versus physically rescanning again for a Libre 2.
This evening, I got a low glucose warning on my Apple Watch, which is connected to my iPhone with the Libre 3 app. It showed a reading of 54, which is really low. The odd thing is that I did not feel any signs of hypoglycemia. I usually feel sick and start to sweat at around 70.
Since there was a down arrow on the 54 reading, I was concerned my blood sugar would drop further. I went downstairs to make something to eat, and the sensor threw an error. You can see the sharp drop in the first screenshot is gone. A few minutes later, the reading was 94 and the line did not get close to 54. False alarm? A 54 reading for me means stop whatever you are doing and quickly find a source of sugar. A false negative for low blood sugar is obviously much worse than a false positive, but whatever sugar I ingest could spike my blood sugar too quickly.
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Now my blood sugar is at 157 after eating a can of Campbell Chicken Noodle soup with some oyster crackers. I did not shoot any insulin since it was low, but now I may have to.
It has increased to 186 while I was typing the paragraph above with an up arrow. Can I trust this reading? This is ridiculous.
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Ugh. Sensor error again. The large rise is now gone and the high is now about 125. I should wait until the error clears, and check with a finger prick.
Life with chronic diseases 