If you haven't done this already they do a vision/hearing test, ask some health questions and will vaccinate you if your not up to date on those. (I got MMR & chicken pox even though I had the pox as a kid-it needs to be on file) then send you with a map to find the building with the lab to give urine & blood samples. Make sure you have enough time to find the POPA place because it was a quest for me lol, but the employees are patient & helpful.