Leonardtown, Maryland  – Beginning Monday, Oct. 2, outpatient laboratory services at MedStar St. Mary’s Hospital will be moved into the main hospital. There will no longer be laboratory services offered in the Outpatient Pavilion. Patients who need blood work or specimen collections should sign in at the front desk in the hospital’s main lobby.

Not all insurances are accepted at the hospital laboratory and it is recommended patients contact their insurance providers prior to visiting. All insurances are accepted at MedStar St. Mary’s Hospital’s laboratory centers at the Belmont Building in Leonardtown and at the Chesapeake Charter School in Lexington Park.

All locations accept walk-ins for general blood testing, but appointments will be required for glucose tolerance tests, semen analysis, and DNA testing. The last specimen collection is performed 15 minutes prior to closing at each site.

Laboratory Center at MedStar St. Mary’s Hospital
25500 Point Lookout Road, Leonardtown, MD 20650
301-475-6133 PHONE    301-475-6165 FAX
7 a.m. to 6 p.m., Monday-Friday; 7 a.m. to 12 p.m., Saturday

Laboratory Center at the Belmont Building
23000 Moakley Street, Suite 103, Leonardtown, MD 20650
301-475-2494 PHONE    301-475-8388 FAX
7 a.m. to 5 p.m., Monday, Tuesday, Thursday; 7 a.m. to 4 p.m., Wednesday; 7 a.m. to 12 p.m., Friday
Office closed from 12 to 1 p.m.

Laboratory Center at the Chesapeake Charter School
20945 Great Mills Road, Suite 202, Lexington Park, MD 20653
301-866-1464 PHONE    301-862-9575 FAX
7 a.m. to 4:15 p.m., Monday – Friday; Office closed from 12 to 1 p.m.

Visit MedStarStMarys.org/Laboratory for more information.