Mercy Laboratory Services - Clayton-Clarkson

Imaging, Labs or Tests
15945 Clayton Road
Ballwin, MO 63011

Phone: (636) 256-5315
Fax: (636) 256-5319
Monday-Friday: 6:30 a.m. - 5 p.m.; Saturday: 8 a.m. - 12 p.m.
Services are provided by Mercy Hospital St. Louis Learn more »

We offer a full range of lab testing services. Test results are immediately transmitted to your physician’s office. Patients may also have specimens collected and tested here and the results sent to a specialist in another city. In addition to routine lab tests most often requested by your physician, we also provide health screens to promote wellness and reduce health risks in our community.

Mercy Lab is pleased to partner with Mayo Medical Laboratories for specialized and esoteric testing. Find our test catalog, specimen requirements, laboratory medicine news, interpretive guides and other information on our regional Mayo partner portal.