For medical professionals: Elmhurst Reference Lab

Whether you’re a one-physician office practice or a national medical research firm, we’re committed to working with you to ensure the best possible outcome for your patients.

We perform a full range of routine and specialized testing onsite and can often get results back to you within 24 hours. You’ll find competitive pricing, professional courier services, custom test ordering, report delivery options, professional consultation and responsive technical support.

Your patients benefit from convenient locations, many of which offer evening and weekend hours.

View lab locations

Testing services

Online test directory

Search our online test directory for a full list of the services we provide.

Login to test directory

For updates regarding our growing list of testing services, view our test updates.

For information regarding a test not found in our test directory, contact Client Services at 331-221-4422.

Medicare limited coverage

If it is likely that Medicare will not cover a test, your patient will need to complete an Advanced Beneficiary Notice (ABN) before the test is ordered. The ABN Form serves as a notice that there is reason to believe Medicare will determine the test to be medically unnecessary, and therefore, will not pay for it. A copy of the signed ABN Form must be submitted with the test order.

More information on ABNs and tests with limited Medicare coverage can be found in the current CMS website.

Genetic testing

When ordering genetic tests such as Maternal Serum QUAD Screen, AFP Amniotic Fluid, AFP Serum, Chromosome Studies, Products of Conception or Cystic Fibrosis, we ask that you complete a Genetic Test Form and forward it with the specimen.

Reflexed testing

A reflexed test is a secondary test performed when a primary test result is outside of established result parameters. These secondary tests are performed to confirm the primary results or enhance the patient's clinical picture.

For some tests, performing the reflexed test is considered common practice and does not require additional orders from the physician. Other reflexed tests, though they may be clinically relevant, are not automatically performed unless specifically requested by the physician, usually at the time of the initial test order.

View the reflex test list

STAT testing

Before ordering a test STAT, please verify that it is available on a STAT basis.

View available STAT tests

Couriers may be dispatched for STAT specimen pickup by calling Client Services at 331-221-4422. Additional charges are applied to requests for a STAT specimen pickup.

Specimen collection

Collection instructions and requirements

We’ll work closely with you through every step of the process, including specimen collection. You can expect accurate identification, quality results and timely reporting as your patient's specimens are monitored through our computerized tracking system from pick-up to delivery.

General specimen collection procedures
Special specimen collection procedures

Patient instruction resources

If your patients will be collecting specimens themselves, provide them with these resources to guide them through the process.

Storage conditions and courier transport

To learn about specimen storage temperatures, obtaining courier specimen pickup and packaging specimens for courier transport, view instructions for specimen storage and transport.

Specimens or cultures classified as "Category A" Infectious Substance are regulated by state and local government agencies and may only be transported if certain conditions for packaging and transport are met.

Specimens or cultures classified as "Category B" Biological Specimens are regulated by state and local government agencies and may only be transported if certain conditions for packaging and transport are met.

Supplies and equipment

Order supplies

All users may send an email to or download the supply order form.
For courier delivery (local)

Request equipment or service call

To request a site survey for computer equipment or service for EMH Reference Laboratory equipment already placed in your office, please call or email Client Services at 331-221-4422 and ask for the LIS Outreach Analyst.

Please note that the provision of equipment and supplies must be in accordance with federal and state laws and regulations. We provide equipment and supplies to our clients at no charge or below fair market value, but they must be used exclusively in conjunction with laboratory services provided by EMH Reference Laboratory.

Test results

Most results available same day.  Contact Client Services at 331-221-4422 for results and available options for receipt of results.

Test updates and news


About us

Comprehensive pathology and medical laboratory services

EMH Reference Laboratory is among the largest full-service clinical laboratory facilities in the Chicagoland area. We are affiliated with Elmhurst Hospital, part of the Edward-Elmhurst Healthcare system, and have a partnership with ARUP Laboratory and Mayo Medical Laboratory.

We are accredited by the College of American Pathologists and The Joint Commission. Our medical and technical staff is certified in the field of pathology and laboratory medicine, including coagulation, molecular diagnostics, immunology, surgical pathology, cytology, clinical hematology, chemistry, microbiology, molecular virology and flow cytometry.

Pathologists and consultants

Associated Pathology Consultants (APC) provides guidance and expertise to our lab. APC is a service-oriented physician practice committed to providing high-quality pathology and medical laboratory services.

Contact us

Client Service Center

Our Client Service Center is available Monday through Saturday to answer questions and assist you with accessing all of our laboratory client services, including:

  • Changing a test order
  • Specimen collection
  • Courier pickup
  • Requisitions and supplies
  • Reports
  • Technical support
  • Arrange for medical consultation

Monday - Friday: 7 a.m. - 8 p.m.
Saturday: 7 a.m. - 3 p.m.

Contact us at 331-221-4422.