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A: If your room temperature goes above about 80 degrees Fahrenheit, you would be safer to keep your insulin in the refrigerator. Q: I use an insulin pen. I have heard I should keep my pen at room temperature for only two weeks. But insulin in vials can be kept at room temperature up to 28 days.
If the insulin has been stored in the refrigerator, remove it 30 minutes before you inject it. Remove all air bubbles from the syringe before the injection. If you clean your skin with an alcohol pad, wait until it has dried before you inject insulin. Relax the muscles at the injection site.