THEY'RE OPEN ON WEEKENDS! This can be a huge life saver if you have a busy schedule and need to get lab work done in a hurry.
However, be warned that if you do not have an appointment at this location, you will most likely have to wait in excess of an hour and a half from the time you sign your name at the desk if you're in need of services. Because of their location, this Quest fills up fast, and I feel that they could use a couple more employees to help expedite the process.
Overall, save yourself time and MAKE AN APPOINTMENT!