Mercy Laboratory Services - 7345 Watson

7345 Watson Road
St. Louis, MO 63119
Fax: (314) 752-3284
Services are provided by Mercy Hospital South Learn more »
Hours of Operation:
Monday-Friday: 7:30 a.m. - 5 p.m.; Saturday: 8 a.m. - noon No appointment needed.
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We’re pleased to announce that St. Anthony's Laboratory Services at Southwest Medical Center joined Mercy Clinic effective October 1, 2018. This is an exciting time for our organizations and for health care in the St. Louis area. All participating St. Anthony’s providers, co-workers and office locations will be integrated into Mercy to provide expanded services and better coordination of your care and wellness.

Mercy South Laboratory Services offers a full range of lab testing services; more than 5,000 tests to screen for diseases, confirm diagnoses and monitor drug therapy. Laboratory test results are immediately transmitted to your physician’s office.

In addition, we also provide health screens to promote wellness and reduce health risks in the community.

Accreditations and Certifications

Every Mercy South laboratory is:

  • Accredited by the College of American Pathologists (CAP) and The Joint Commission
  • Registered with the Food and Drug Administration (FDA)
  • Certified under the Clinical Laboratory Improvement Amendments of 1988 (CLIA) program