What’s the operating and storage altitude of my biosensors? The operating and storage altitude is -381 metres (-1,250 ft) to 3,048 metres (10,000 ft). Related articles Can I use my biosensor while flying? Why does my new biosensor give higher or lower glucose readings than my previous biosensor? Is Lingo the same as Freestyle Libre? What if my biosensor comes off too soon? How do I recycle or dispose of my biosensor?