Replying to Hospital Volunteer

Quick question about volunteering at a hospital. I want to volunteer at the one in my town, they have 4 categories, the one I fall into is the 'college' one or whatever. They have an interview session in two weeks to see candidates for their program. Do you think they will drug test there? I've only smoked twice in like the last 2-3 weeks, and the drug test is in 2 weeks so I should be fine if I exercise and drink a lot of water and shit, but I just want to be sure. So do you think they will do a quick piss test at this interview process or anything?