Can I look at my hand after revealing my card and before I pass it to the next player?
The rules state


  After revealing cards, pass your remaining hand face-down to 
  the player on your left.


Technically, when you reveal your card, you should (or at least you're allowed to) still have your hand in front of you. It's safe to assume that it's not illegal to pause for an extra moment to look at your hand before passing.