Laboratory Services
Mercy offers a full range of laboratory services with quick turnaround times for our customers.
Patients may have specimens collected here at the hospital, or at our clinics throughout the area. Test results are transmitted immediately to your primary-care or specialty physician.
In addition to the routine lab testing most often requested by doctors, our services include:
- Pre-employment drug screening or screening for workers’ compensation injuries
- Federal drug screen collections for the Department of Transportation
- Health screens to promote wellness and reduce health risks
- Outpatient transfusion services
Locations offering Laboratory Services
Mercy Laboratory Services - Washington
Hours of operation are not available online.
Mercy Laboratory Services - Mercy Hospital Washington
Monday: 12:00 pm–12:00 pm
Tuesday: 12:00 pm–12:00 pm
Wednesday: 12:00 pm–12:00 pm
Thursday: 12:00 pm–12:00 pm
Friday: 12:00 pm–12:00 pm
Saturday: 12:00 pm–12:00 pm
Sunday: 12:00 pm–12:00 pm
Mercy Laboratory Services - Union
Monday: 8:00 am–5:00 pm
Tuesday: 8:00 am–5:00 pm
Wednesday: 8:00 am–5:00 pm
Thursday: 8:00 am–5:00 pm
Friday: 8:00 am–5:00 pm
Saturday: closed
Sunday: closed
Mercy Laboratory Services - Wildwood
Monday: 7:30 am–4:00 pm
Tuesday: 7:30 am–4:00 pm
Wednesday: 7:30 am–4:00 pm
Thursday: 7:30 am–4:00 pm
Friday: 7:30 am–4:00 pm
Saturday: closed
Sunday: closed
Mercy Laboratory Services - Eureka
Monday: 7:00 am–3:30 pm
Tuesday: 8:30 am–5:00 pm
Wednesday: 7:00 am–3:30 pm
Thursday: 8:30 am–5:00 pm
Friday: 7:00 am–3:30 pm
Saturday: closed
Sunday: closed
Mercy Laboratory Services - O'Fallon
Monday: 7:00 am–5:00 pm
Tuesday: 7:00 am–5:00 pm
Wednesday: 7:00 am–5:00 pm
Thursday: 7:00 am–5:00 pm
Friday: 7:00 am–5:00 pm
Saturday: closed
Sunday: closed
Mercy Laboratory Services - Clayton-Clarkson
Monday: 6:30 am–5:00 pm
Tuesday: 6:30 am–5:00 pm
Wednesday: 6:30 am–5:00 pm
Thursday: 6:30 am–5:00 pm
Friday: 6:30 am–5:00 pm
Saturday: 8:00 am–12:00 pm
Sunday: closed
Mercy Laboratory Services - Piper Hill
Monday: 7:00 am–5:00 pm
Tuesday: 7:00 am–5:00 pm
Wednesday: 7:00 am–5:00 pm
Thursday: 7:00 am–5:00 pm
Friday: 7:00 am–5:00 pm
Saturday: closed
Sunday: closed
Mercy Laboratory Services - St. Charles
Monday, Wednesday, Friday:
7 a.m. - 3:30 p.m.
Tuesday, Thursday: 8:30 a.m. - 5 p.m.
Mercy Laboratory Services - Fenton
Monday: 7:00 am–5:00 pm
Tuesday: 7:00 am–5:00 pm
Wednesday: 7:00 am–5:00 pm
Thursday: 7:00 am–5:00 pm
Friday: 7:00 am–5:00 pm
Saturday: 8:00 am–12:00 pm
Sunday: closed
