when traveling on planes to a destination, will HCg be ok out of refrigeration for 5 hours or so (until i get to my hotel)?
Get one of those chemical ice packs that you squeeze to activate. Place in a ziplock freezer bag and you're set. That's what I do when travelling. You won't have an issue. Just in case, bring the box with the Rx label on it.
Actually there have been studies that show HCG begins to lose potency fairly quickly as it comes to room temp. Someone posted them here quite a while back.
my experience is that it degrades rather quickly at room temperature. Keep it in a cooler, Better safe than sorry.