Clinical Research Unit (CRU)

The Clinical Research Unit (CRU), a component of the Center for Applied Research Sciences (CARS), operates as an in-patient and out-patient clinical research unit for studies that require more “intense” nursing services than the studies performed in the Clinical Trials Unit (CTU) or that require an inpatient stay.

CRU Services & Resources


Outpatient and extended visiting area consisting of 6 rooms and 12 semi-private beds staffed 24 hours a day (as research necessitates)


Staffed by Registered Nurses (with ACLS and/or PALS, NRP, IATA, AHA CPR instructor certified), DEXA technicians and medical assistants to assist PIs and study team with clinical research implementation assistance as well as with development of research orders and source documents for studies.

Procedures Performed

A skilled research nursing staff experienced in implementing sophisticated clinical studies is available to assist in or perform a variety of services.  The staff performs both routine research nursing services and specialized protocol required procedures.  For procedure details see the nursing services page.

Specimen Processing Services

+4°C, -20°C, -70°C Storage Capabilities
Specimen Storage & Shipping

Nutrition Services

Bionutrition services and a full metabolic research kitchen for meal preparation.  See the Lifestyle Intervention Research Core (LIRC) for information about nutrition services.

Body Composition Services

Measurement of body composition and bone density by using dual-energy X-ray absorptiometry (DEXA) are available through the CARS CRU. Assessment of body composition in adolescents can also be performed in the CRU. For more information, click here.

Sleep Study Services

Sleep study facility and testing available. Please view CRU Sleep Study Request form for more information. 

Core Laboratory for Clinical Studies (CLCS)

The CLIA-certified CLCS focuses on providing high-quality, cost-effective testing for clients who have studies of all sizes and complexities.

Facilities & Other Resources

For a description of the CRU and other ICTS resources, see the Tools and Resources page.

Request a Service

Send an email to to request information about services that are currently offered or download and submit the Application Form.


Submit a "Request for Revision or Amendment to Approved Protocol", if applicable.

Service available to:

All entities, including for-profit organizations, with priority given to ICTS members.

Service Hours:

24 hours/day, beginning at 6am Monday - Thursday, and closing at 7pm on Fridays. For weekend hours please see the 2017 Weekend Schedule.  If you need additional hours, please contact Nurse Administrator, Jina Loduca at 314.747.3595 or

Service Fees

Contact Information


Barnard Hospital, 4th and 5th Floors

CRU Team

Samuel Klein, MD
Medical Director

Ann Doyle, RN
Nurse Administrator