Guidor is an NPC that can be found in southeastern Varrock. He tests the plague sample for you during the Biohazard quest. He has a wife who is also featured in the quest. Being a religious person, she will only let a priest, or a player dressed as one with a Priest robe and Priest gown, through the door to cure Guidor in the Biohazard quest.
- Guidor resides behind a door which is locked
- Players who have not started or completed the Biohazard quest will receive no message when attempting to open the door, other than that it is locked
- For players who have started or completed the Biohazard quest, attempting to enter Guidor's room without being dressed as a priest receive the message: guildors wife refuses to let you enter