Lab work question

This might be a silly question, but I'll ask anyways. I graduate in December, and today I was offered an RN position in the ED of a local hospital. I happily accepted and was later contacted by HR to set up my "lab tests". What exactly does this entail? I know it will involve drug testing, which is expected, but what the heck else are they going to do? I'm sure every hospital is different, but I'm trying to get a general idea. I was too excited about getting the job today to think to ask what kinds of tests I was supposed to be agreeing to, lol.
Probably just titers to make sure you're immune to diseases like chicken pox and such.

Every single hospital is different. Call back and ask if you want to know before going.

titers, drug screen----

The only lab I've ever had drawn for work was to check for titers to varicella.

I remember when I started nursing school needing to pay to have titers drawn. When I was hired I was all on top of things and had the school clinic fax all my info over to the employee health center. I went for my physical and they were like, "Here's your lab slips- take them to phlebotomy on the first floor." I saw that they were all for titers and asked, "Didn't you get the paperwork I had faxed over?" "Yeah, we need our own. Phlebotomy. First floor." Hospitals like their titers.