Detect Poison

divination

Level: cleric 0, druid 0, paladin 1, ranger 1, sorcerer/ wizard 0
Casting Time: 1 standard action
Components: V, S
Range: close (25 ft. + 5 ft./2 levels)
Target: or Area one creature, one object, or a 5-ft. cube
Duration: instantaneous
Saving Throw: none
Spell Resistance: no

You determine whether a creature, object, or area has been poisoned or is poisonous. You can determine the exact type of poison with a DC 20
Wisdom check. A character with the Craft (alchemy) skill may try a DC 20 Craft (alchemy) check if the Wisdom check fails, or may try the Craft (alchemy) check prior to the Wisdom check.

The spell can penetrate barriers, but 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt blocks it.