Laboratory Corporation of America® Holdings (LabCorp®) is much more than a routine clinical laboratory. As a pioneer in genomic testing and the commercialization of new diagnostic technologies, LabCorp is one of the world's largest clinical laboratories, with annual revenues of $3.1 billion in 2004. Headquartered in Burlington, North Carolina, LabCorp has approximately 25,000 employees and offers more than 4,400 clinical tests ranging from routine blood analyses to the most sophisticated molecular diagnostics. Listed under the ticker symbol LH on the New York Stock Exchange (NYSE), LabCorp tests more than 360,000 specimens daily for over 220,000 clients nationwide.

LabCorp operates a nationwide network of 35 primary testing locations, more than 1,300 patient service centers, and routine testing is the cornerstone of the company's industry-leading national network. That delivery and service network makes it possible for LabCorp to easily offer an extensive esoteric testing portfolio and groundbreaking technologies to a broader audience, including medically important genomic tests. LabCorp's reputation and proven record in the area of advanced genomic testing continues to attract the leading minds and technological pioneers in the field. Its laboratories participated in the development of genomic applications using Polymerase Chain Reaction (PCR) technology and LabCorp was the first commercial laboratory to provide this innovative technology to health care providers. LabCorp laboratories have been at the forefront of new molecular tests to diagnose, treat and manage disease, particularly in the areas of infectious disease, oncology and genetics. LabCorp's molecular genetics testing center was involved with the original research and subsequent standardization of Her-2Neu testing for breast cancer. LabCorp combines its expertise in innovative clinical testing technology with specialized Centers of Excellence.

LabCorp maintains a network of more than 1,300 Patient Service Centers (PSC) nationally. These sites arestrategically located throughout the United States.

CENTERS OF EXCELLENCE: LabCorp operates a nationwide network of 35 primary testing locations and combines its expertise in innovative clinical testing technology with the following specialized Centers of Excellence:

The Center for Molecular Biology and Pathology
(CMBP)
The Center for Molecular Biology and Pathology (CMBP) - Located in Research Triangle Park, North Carolina, the CMBP develops applications for polymerase chain reaction (PCR) technology. LabCorp was an early pioneer in Infectious Disease testing, and was the first commercial laboratory to offer HIV viral load and resistance testing. As a scientific leader in the field of Diagnostic Genetics, the CMBP's scientists are known for their expertise in such areas as cytogenetics, and biochemical and molecular genetic testing for conditions like Down Syndrome, cystic fibrosis and Tay-Sachs syndrome.

National Genetics Institute (NGI)
National Genetics Institute (NGI) - Located in Los Angeles, California, NGI is developing novel, highly sensitive PCR methods for testing hepatitis C and other infectious agents. This LabCorp Center is an industry leader in hepatitis and HIV testing and at the forefront of state-of-the-art advancements in the area of plasma screening.

ViroMed Inc.
ViroMed Inc. - This Minneapolis, Minnesota Center offers molecular microbial testing using real-time PCR platforms, molecular infectious disease testing, safety testing for tissue and eye banks, and the most up-to-date techniques for clinical trials testing including pharmaceutical, biotechnology, and contract research organizations working on new drug development.

The Center for Esoteric Testing (CET)
The Center for Esoteric Testing (CET) - The CET performs the largest volume of specialty testing in the Company network. It is comprised of eight departments - Allergy, Diagnostic Immunology, Hemostasis and Thrombosis, Esoteric Immunoassay, the Kidney Stone Management Program, Microbiology, Special Chemistry and Clinical Toxicology. The Center operates within a 212,000 square foot laboratory complex, where more than 22 million tests are performed a year.

DIANON Systems, Inc.
DIANON Systems - LabCorp's Anatomic Pathology Center of Excellence, is a leader in providing full service, outpatient anatomic pathology and genetic services. DIANON makes the diagnosis for essentially all types of cancer, as well as for many inherited and acquired genetic diseases.
Through the combination of its state-of-the-art technology leadership, experienced and dedicated personnel, national geographic scale, commitment to superior customer service, and strategic partnerships, LabCorp is achieving its goal of creating a world class national laboratory with the best and broadest menu of oncology testing services.

US LABS

Esoterix, Inc.

LabCorp strives to be an integral part of the community where our employees live and work. LabCorp makes corporate contributions that focus on the needs of our local community in and around our headquarters in Burlington, North Carolina.

We focus our charitable giving in the following categories:
1) health and welfare 2) education and 3) arts and culture. In the past we have supported the following local groups.

Alamance Burlington School System
Alamance Community College
Alamance County Arts Council
American Cancer Society - Relay for Life
Juvenile Diabetes Research Foundation
Leukemia & Lymphoma Society - Light the Night Walk
March of Dimes Walk America
United Way
YMCA