Quest Diagnostics in St. Louis

Mon:7:00 am - 5:00 pm
Tue:7:00 am - 5:00 pm
Wed:7:00 am - 5:00 pm
Thu:7:00 am - 5:00 pm
Fri:7:00 am - 5:00 pm
Sat:7:00 am - 1:00 pm

Please note times may vary due to seasonal opening hours and extended store trading times.
Store hours are subject to change. Please call the store for exact opening hours.