Hey all. I prefilled a syringe for Ari. How long is it good for me to keep in the fridge? I know some insulin you shouldn't prefill, but I wasn't sure about Prozinc. Basically I set up the dose so I wouldn't have to try and eyeball in the wee hours, but now I'm thinking that I could prep a few for the cat sitter so I don't have to worry about her eyeballing, but I want to make sure they would be ok.