BioReference Laboratories Announces Aetna National Ancillary Services Agreement Effective December 15, 2006.

BioReference to Become Part of National Aetna Network Offering Laboratory Services to Aetna Members

ELMWOOD PARK, N.J. -- BioReference Laboratories, Inc. (NASDAQ: BRLI) announced today that it has executed a provider participation agreement to provide Clinical Laboratory and Pathology services to Aetna members effective December 15, 2006. BioReference will be a regional provider for laboratory services within the New York and New Jersey Metropolitan area and a national provider throughout the country for the BRLI focused national service offerings, in particular its GenPath oncology services. Aetna (NYSE: AET) is one of the nation's leading diversified health care companies providing benefits in all fifty states to more than fifteen million medical members.

Under the terms of the Agreement, Aetna members will have access to those clinical laboratory services provided by BioReference Laboratories and its GenPath business unit that are covered under the terms of the member's health benefit plan. Additional terms of the contract were not disclosed.

Marc D. Grodman, MD, CEO, stated: "We are proud to be participating providers in the Aetna network. The number of subscribers now able to use the clinical laboratory services of BRLI as a participating provider in the New York and New Jersey Metropolitan area under the new Aetna Agreement combined with the eligible subscribers covered by the expanded United Healthcare Agreement as announced by BRLI last month, is in excess of 6 million subscribers."

About BioReference Laboratories, Inc.

The Company is the largest independent regional clinical laboratory in the Northeast and has major market positions in physician offices, nursing homes and correctional institutions. The Company is a full service clinical laboratory with specialty capability, especially in the areas of genomics, oncology, correctional health, and complimentary medicine. PSIMedica, a business unit of the Company, is a clinical knowledge management (CKM) organization offering an array of information solutions for reducing healthcare costs and improving quality performance that are based on a flexible, scalable software analytical engine that utilizes all available source information, including claims data, enrollment data, prescription data and laboratory data. The Company provides a comprehensive connectivity solution to physicians as well as other laboratories, which includes laboratory reporting and ordering, as well as laboratory to physician communications and cumulative reporting, through CareEvolve, its web-based healthcare portal.

This press release contains certain "forward-looking" statements, as defined in the United States Private Securities Litigation Reform Act of 1995, that involve a number of risks and uncertainties. There can be no assurance that such statements will prove to be accurate and the actual results and future events could differ materially from management's current expectations. Such factors are detailed from time to time in the Company's filings with the regulatory authorities having jurisdiction.