Speak to Atlalli, the Master Alchemist in the Hunting Banks of Timberline Falls to start the Hylek Poison's Test once you have crafted the Vial of Potent Hylek Poison.
Speak to Atlalli, the Master Alchemist in the Hunting Banks of Timberline Falls to start the Hylek Poison's Test once you have crafted the Vial of Potent Hylek Poison. · Guild Wars 2 Database