Blood Test~!

I have 2 months and 10 days untill i finish my contract with the military. In the next comming months or two i will have to get a blood test, does anyone know what they will be testing for? I'm thinking STD's, rec. drugs or something majorly wrong with my lipid profiles but i can't be sure if they will be able to find Dianabol and/or Testosterone in my system from the cycle i am going to start.

Can someone give me some advice?
Will they be looking for anabolic steroids and/or elivated testosterone (esters)?

Are they able to find those things from a standard test?