I'm curious. What protocol if any do you fallow while you have snakes in quarantine?

I've had/have several different types of fish, I alway's quarantine new arrivals to obeserve for things like interanl/external parasites. However, snakes are a bit different.

If there is not a vet around to examine a snake what are the sigs/sypmtoms that people should be looking for while the snake is in quarantine?