Refrigerate stool sample?

I just collected a sample and I can't remember if the Vet said to refrigerate it or not, all I remember is that it couldn't be "baked" but I caught it within an hour of him dropping it so I know it's fresh. I do not however know if I should refrigerate it as he did it long after the vet closed (12 am) and I will be bringing it in tomorrow afternoon at the earliest. Let me know plox! Thanks!

Update: I did refrigerate it, it was the right thing to do, they have found pin worms, treatment begins in his next feed.

Thanks for letting us know and good luck treating for the worms!

Thanks!