Lab Services

L. Medicine Labs, LLC, (formerly known as Chicago Market Labs) is an independent laboratory providing services to MacNeal Hospital as well as other local hospitals and physician offices. The laboratory provides routine services such as blood counts and lipid testing and specialized laboratory testing. L. Medicine Labs, LLC, provides convenient patient services centers in the local community where patients can have their blood drawn. No appointments are necessary.

Contact Us

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

Find a Patient Service Center

MacNeal Patient Service Center

3231 S. Euclid Ave., (1st floor)
MacNeal Professional Service Building 
Berwyn, IL 60402
Ph. 708-783-5117; 708-783-3485; 708-783-0550
Fax 708-783-0028
Fax 708-783-0347
M,W,F — 6:30 am to 5 pm
T, Th — 6:30 am to 7 pm
Saturday — 6 am to 3:30 pm

CHMG Archer OB-GYNE Patient Service Center

6187 S. Archer Avenue, Suite 102 
Chicago, IL 60638
Ph. 708-564-6187
Fax 708-581-9661
M, W, F — 8:15 am to 3 pm
Tu - Th — 9 am to 5 pm
Sat - Sun — Closed

Cermak Patient Service Center

6425 W. Cermak
Berwyn, IL 60402
Ph. 773-564-6453
Fax 708-484-0290 
Monday — 8 am to 7 pm
Tuesday — 9 am to 7 pm
Wednesday — 9 am to 5 pm
Thurs / Fri — 8 am to 2 pm

LaGrange Patient Service Center

47 S. 6th Ave., 1st floor, Suite D 
LaGrange, IL 60525
Ph. 708-588-9615 
Fax 708-588-9617 
M, Th — 9 am to 7 pm 
Tu, Wed — 9 am to 5 pm 
Friday — 8 am to 5 pm
Saturday — 9 am to 1 pm

Riverside Patient Service Center

3722 S. Harlem Ave., Lower Level
Riverside, IL 60546
Ph. 708-783-6931
Fax 708-783-0620
Monday – Friday — 7 am to 5 pm
Saturday — 7 am to noon

River Forest Patient Service Center

7411 W. Lake Street, L140 (Lower Level)
River Forest, IL 60305
Ph. 708-488-1510
Fax 708-689-0506
Monday — 7:30 am to 8 pm
Tu, Wed, Th — 7:30 am to 5 pm
Friday — 7:30 am to 4:30 pm
Saturday — 8 am to noon

Pay an Invoice

This section allows you to securely pay your monthly invoice, request additional copies of your invoice and request billing changes to your invoice.

  • Pay an invoice: Pay your CML invoices online.  CML accepts: Visa, Mastercard, Discover and American Express
  • Request an additional copy of an invoice. 
    Contact us at 708-783-3280 option 1 and ask for a copy.

For any other questions regarding your invoice please call: 708-783-3280 option 1

L Medicine Labs, LLC, Billing FAQs

Why have I received a bill from L Medicine Labs, LLC (formerly Chicago Market Labs)?

L Medicine Labs has received information from your ordering physician or your insurance company indicating a patient responsibility for testing services.  For further information about the specific nature of the bill, please contact our Patient Billing department at 708-783-3280, option 1.

How often will L Medicine Labs, LLC (formerly Chicago Market Labs) bill me?

L Medicine Labs, LLC, will send you a bill approximately every 30 days,  Payment from you is expected promptly upon receipt of the bill.  If you are an uninsured patient please see "Prompt Pay Discount."

What methods of payment does L Medicine Labs, LLC (formerly Chicago Market Labs) accept?

L Medicine Labs, LLC, accepts payment for laboratory service bills using any of the following methods:  Visa, MasterCard, Discover, American Express, personal check or money order. 

You may mail payments to:

L Medicine Labs, LLC
P.O. Box 83205
Chicago, IL  60691-0205

Please remember to attach the stub of the bill when mailing your payment, and include your invoice number on the check. 

Why didn't my insurance pay this claim?

You should have received an Explanation of Benefits (EOB) from your insurance carrier that explains in detail the services that were either paid or denied.  If you need further assistance determining the reason(s) why your insurance company did not pay for your bill, please contact your insurance carrier directly.