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Message: <blockquote data-quote="Nicola M" data-source="post: 2739514" data-attributes="member: 81557">I rarely have failures and if I do like [USER=450212]@Rokaab[/USER] it's usually within the first day and doesn't come out of Sensor Updating. I've heard before that being dehydrated can affect sensor life and I know that if my blood sugars are changing either way quickly (low->high and vice versa) it can make my sensor go into updating and then fail. Like above if it's all from the same batch I would request a replacement set from Medtronic. In all fairness though if my sensor fails before the 7 days are up I slightly unplug the transmitter and then clip it back in and hit "start as new sensor" it rarely if ever fails again and I still change it on what should have been Day 7. I always make sure with finger pricks its accurate after restarting it as a new sensor, I've never found issue with doing this, I think sometimes the sensors just aren't happy so they fail but there's nothing wrong with them. If they were wildly inaccurate before failure then I wouldn't start them as new again though.</blockquote>

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