I applied through university. The process took 2 weeks. I interviewed at Boston Children's Hospital (Boston, MA) in Apr 2008
Interview
Most "techs" apply directly to a specific lab, usually via the lab manager or PI (Principal Investigator). They might then call you to screen you over the phone, or invite you for an in-person interview on-site.
Interview questions [1]
Question 1
Some labs might ask a simple "how do you make a solution with X concentration" question.