Correct me if I’m wrong, but if a PT has run out of needles for an insulin pen, isn’t it illegal to borrow unused needles from another PT?

I don't see why. As long as its an unused needles. I am sure my VNA nurses had needles on hand to give clients shots if they were out of needles. (Clients supplied their own supplies, we were non-profit) Don't think syringes are DNA controlled.

Im not sure if illegal would be the term I would use but if someone needs their insulin shot and there are clean needles available then it might be a necessary choice. It sounds like there is mismanagement of the supplies. And, of course, the unused needle from the other patient would need to be replaced. Sounds like a stressful situation for you to sort through.

You are the nurse, you tell us. Why are you asking this question? Are referring to a particular incident?