doctor shirts ?? help!

how do i obtain a doctors shirt ?
please clear this up thank you.

Its in the closed off part of adrounge somewhere… kill somebody i think/

you get it at West Ardougne and its a Biohazard quest item. Obtain from cupboard in Nurse Sarah’s house and wear it to enter Mourners’ house in northeast corner of Plague City area.

Taken from runehq

What these guys said. =)