TLDR: Had an unopened NovoRapid insulin vial in refrigerator. Took it out and it has been unopened at room temperature for 2 months. Is it still good?
Long story: Had a backup vial of NovoRapid in the nurses office at our sons school in the fridge. They returned it last day of school and it went unnoticed and has been at room temperature ever since. Should we put it back in the fridge? Use it as our next vial as is? Toss it?
TIA for your responses 
Small studies have indicated manufactures really need to revisit their insulin storage instructions because 1. refrigeration isn’t available everywhere 2. safety didn’t appear to be an issue in the small studies and 3. efficacy degrades over time.
Without more information I stick to the instructions from Novo Nordisk which is the product expires 4 weeks after it exits the refrigerator.
There’s no magical switch that flips and automatically “turns off” a medication after a certain date - personally I might try it myself for a day or two to see how well it works - but I’m an adult and occasionally try things others might not. But that assumes it looks right in the first place. NovoRapid® should be clear and colorless: if it “looks odd” or you see sediment or anything doesn’t look right, I would discard the bottle.
Hi @bhawken27 welcome to Beyond T1D
Honestly it’s your kid and the vial has been out a modestly long time so I would NOT let it ride for this whole school year.
One strategy might be to swap the school’s vial with one you know is well kept. And then you can use that vial first at home. That way it saves you a copay and you can use it up in a controlled environment.
Insulin is pretty tough but it won’t give you much warning. Cheers good luck on school this year 