Penn State Health Lab Services 4301 N 5th St Hwy Suite 102 Muhlenberg, PA 19605 610-208-8801 Fax: 610-898-1221 ClosedOpens 7:00AM Sunday: ClosedMonday: 7:00 am-7:00 pmTuesday - Wednesday: 7:00 am-6:00 pmThursday: 7:00 am-7:00 pmFriday: 7:00 am-5:00 pmSaturday: 8:00 am-12:00 pm *Walk-in services. No appointment required.