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RE: [IPk] For Rhoda- back up pens failing!

>BTW can you remind me why we are advised not to store a pen in the fridge
>once we have started using the cartridge in it?

When the insulin gets cold, it expands a little and forces insulin 
out of the needle. When you take it out of the fridge, it sucks air 
back in, and you are in a pickle...

(or does it shrink when cold, and expand when it warms?)
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