It's totally: variable and depends upon the device. They can work for many years. If you're getting accurate results -- you can check by doing a finger stick the next time you have a lab blood sugar drawn and comparing the results - you don't need a new one unless your insurance coverage necessitates a change or you find one you like better for some other reason, such as a new feature, speed, amount of blood, e
Answered 5/19/2014
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