Scheduling is easy. Just walk in with your prescription. While all lab tests require a physician’s prescription, you don’t need an appointment to come in for outpatient lab testing. You will need to register at outpatient registration in the hospital's main lobby Monday through Friday. On weekends and after hours, please register with the staff in our Emergency Room. While our lab is open 24/7, our preferred hours are 7:00 am to 5:00 pm, seven days a week.