For Additional Information Contact:

Patient Safety Institute
Johnny Walker
Chief Executive Officer
(972) 444-9800
info@ptsafety.org

LabCorp
Pam Sherry
Senior Vice President
Investor Relations
336-436-4855
Investor@labcorp.com

LabCorp and Patient Safety Institute Partner to Improve Access to
Laboratory Test Results and Preserve Patient Privacy

Alliance Will Leverage Medicity Technology to Serve Patients
in the State of Delaware

PLANO, Texas and BURLINGTON, North Carolina, July 21, 2003-The
Patient Safety Institute (PSI) a leader in patient information,
safety and healthcare connectivity, and Laboratory Corporation of
America-Registered Trademark- Holdings (LabCorp-Registered
Trademark-) (NYSE:LH), a pioneer in commercializing new
diagnostic technologies, announced today an agreement to work
together to provide clinical laboratory results to physicians via
PSI's secure, patient-centered, point-of-care information system
(PSI System).  Initially, the alliance will focus on providing
this capability to physicians in Delaware as part of the first
statewide clinical information sharing utility, which was
announced on July 8th.  PSI's Supporting Partner, Medicity Inc.,
will play a key role in providing technology to the partnership
and in facilitating the Delaware initiative.

The goal of this alliance is to ensure that all physicians
who participate in the PSI System, beginning with the
Delaware network, have access to updated laboratory results
for patients who grant permission for sharing of their
data.

LabCorp maintains a nationwide network of state-of-
the-art medical testing laboratories and offers more than
4,000 clinical tests. Laboratory test results, like those
provided by LabCorp, influence thousands of critically
important decisions made by patients, doctors and other
health care professionals each day. By virtue of its broad
range of capabilities, LabCorp goes well beyond the
traditional role of a clinical lab, and acts as an active
partner in enabling medical professionals to leverage the
latest diagnostic technology to help preserve patient
health and improve quality of life.

"LabCorp shares PSI's vision for improving the quality of
clinical care, reducing cost and enhancing customer service for
all participants in today's health delivery system," said LabCorp
Executive Vice President for Sales and Marketing, Stevan R.
Stark. "By remaining committed to embracing new technologies that
improve clinical information access, LabCorp seeks to provide the
highest quality test ordering and results reporting solutions
possible for doctors who need the information in real time.  This
exciting new partnership with Patient Safety Institute allows
LabCorp to increase physician access to critical information at
the point of care."

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PSI is dedicated to improving healthcare quality and reducing
healthcare costs by providing, upon consent of the patient, real-
time access to clinical information for patients, hospitals and
physicians at the point of care. Under a national collaborative
governance model, patient, physician and hospital leaders have
come together to create a trusted third party that can harness
the power of emerging technology and apply it to the sharing of
clinical information.

"The ability to incorporate test results from LabCorp into the
PSI Network is crucial to physicians who rely on this information
for making patient care decisions," said Johnny Walker, CEO of
PSI. "Working with our partner, Medicity Inc, we are able to
quickly incorporate this functionality for the Delaware statewide
network."

"The alliance between LabCorp and PSI brings an important
capability to the Delaware statewide PSI network," said Kipp
Lassetter, MD, CEO of Medicity Inc.  "As the physician portal
partner for the Medical Society of Delaware, Medicity is pleased
to be able to help facilitate this important relationship."

"The partnership of PSI and LabCorp advances the Medical Society
of Delaware's goal of improving patient care through real-time
statewide clinical information sharing," added Mark Meister,
Executive Director of the Medical Society of Delaware.  "Improved
access to critical information at the point of care is an
important part of Delaware physicians continuing desire and quest
to provide higher quality medical care in the most efficient
manner."

About Patient Safety Institute:

Patient Safety Institute is a non-profit, patient-oriented and
community driven organization that is dedicated to providing
confidential, real-time access to critical clinical information
to patients, hospitals and physicians at the point of care.
Under a collaborative governance model, patient, physician and
hospital leaders have united to combine the power of new and
emerging technologies with the strength of patient-provider
relationships to improve the quality of care and lower health
care costs.  For more information on PSI, please visit
www.ptsafety.org.

About LabCorp:

The first national clinical laboratory to fully embrace genomic
testing, Laboratory Corporation of America-Registered Trademark-
Holdings (LabCorp-Registered Trademark-) has been a pioneer in
commercializing new diagnostic technologies. As a national
laboratory with annual revenues of $2.5 billion in 2002 and over
24,000 employees, the Company offers more than 4,000 clinical
tests ranging from routine blood analyses to sophisticated
molecular diagnostics. Serving over 200,000 clients nationwide,
LabCorp combines its expertise in innovative clinical testing
technology with its Centers of Excellence. The Center for
Molecular Biology and Pathology, in Research Triangle Park, North
Carolina, offers state-of-the-art molecular gene-based testing in
infectious disease, oncology and genetics. DIANON Systems, its
Anatomic Pathology Center of Excellence, is a leader in oncology
and genetic testing, and National Genetics Institute in Los
Angeles is an industry leader in developing novel, highly
sensitive polymerase chain reaction (PCR) methods for testing
hepatitis C and other blood borne infectious agents. LabCorp's
Minneapolis-based ViroMed offers molecular microbial testing
using real time PCR platforms, while its Center for Esoteric
Testing in Burlington, North Carolina, performs the largest
volume of specialty testing in the network. LabCorp's clients
include physicians, state and federal government, managed care
organizations, hospitals, clinics, pharmaceutical and Fortune
1000 companies, and other clinical laboratories.  For more
information on LabCorp, please visit www.labcorp.com.

<PAGE>

Each of the above forward-looking statements by LabCorp is
subject to change based on various important factors, including
without limitation, competitive actions in the marketplace and
adverse actions of governmental and other third-party payors.
Actual results could differ materially from those suggested by
these forward-looking statements. Further information on
potential factors that could affect LabCorp's financial results
is included in the Company's Form 10-K for the year ended
December 31, 2002 and subsequent SEC filings.

About Medicity:

Medicity Inc. was created to wed its founders' intimate knowledge
of physician workflow and clinical systems with secure web portal
technology. The result is a company that provides comprehensive
web solutions to solve the complex connectivity problems facing
today's healthcare organizations. Medicity serves such large
customers as Laboratory Corporation of America Holdings
(LabCorp), Unilab, Kindred Healthcare, IASIS Healthcare, Medical
Society of Delaware, and Catholic Healthcare West. For more
information about Medicity, contact 801.322.4444 or visit
www.medicity.com.



