Laboratory Services

Westlake Hospital Outpatient Laboratory offers a wide range of highly complex to routine testing services such as blood counts and lipid testing. No appointment is necessary except for the 3 hour glucose tolerance test. The laboratory is located on the first floor of the west wing of the main hospital building. We are open Monday through Friday,  7 a.m. to 5 p.m., and on Saturdays 7 a.m. to 2 p.m. We are closed on Sundays and holidays.  Chicago Market Labs, an affiliate of Westlake Hospital, also offers lab services at 9 convenient locations. See more information about Chicago Market Labs below.

Please remember to bring a physician’s order, insurance card, and photo ID.

Main Number: (708) 938-7225  NOTE: No test results are given over the phone. Please call your physician office for test results.

Outpatient Blood Draw: (708) 938-7735

Chicago Market Laboratories

Chicago Market Laboratories (CML) is the hospital laboratory department of the Chicago area Tenet hospitals (MacNeal; West Suburban; Westlake and Weiss hospitals) and owned clinics. The laboratory provides testing services ranging from highly complex to routine services such as blood counts and lipid testing. Our 9 convenient, no appointment necessary, patient draw stations provide a timely response, rigorous attention to detail, with a spirit toward personable customer service.  

  • Find A Patient Lab Draw Location

  • Pay An Invoice

  • Billing Questions FAQ's

Contact Us

Questions regarding test results can be answered by calling: (708) 783-3280 option number 2.