Rules for identifying poisons

[Green Eyed Liar]

I cannot find any rules for identifying poisons (though I am certain they exist and are probably very clearly labeled in the Core rulebook). Could someone give me a nudge in the right direction on this topic?

[Super Zero]

Identify Alchemy is in the Skills chapter under Crafting (page 245 of the CRB).

It doesn't specifically mention poisons, but they're generally alchemical items.
Poisons are also listed as a topic for Recall Knowledge under the Medicine skill.

[Malk_Content]

I go with the Identify Alchemy rules as Super Zero mentioned for working out what a vial of the stuff is. If someone is witnessing the results or autopsying a corpse I let them use medicine instead.

[Nefreet]

Ask your GM if you can use Lore. A character in my Campaign has Poison Lore for just this sort of thing.