I've been curious about this for awhile. I've seen that often when your CWD is on a pump and needs a correction, several of you will give the correction with a syringe or pen. When you do this, do you have the insulin set out at room temperature prior to the injection, or do you pull it directly from the refrigerator? When you're using a pen occasionally for this type of correction, I'm assuming it goes back in the refrigerator. Do you keep the pen indefinitely, or once you've used it once, do you start counting down the 28 days and throw it away after that? Also, we have a Levemir pen that was used once in the hospital in December(we're on Lantus). They sent it home with us, and it's been in the butter compartment ever since. Would it be okay to use at this point if we had some reason to want to? If so, how long can we hang on to it?