Avitar, Inc. Launches New Corporate Web Site Featuring B2B E-Commerce Solutions

June 29, 2000

CANTON, MA, June 29, 2000–Avitar, Inc. (AMEX: AVR) has launched a new corporate web site featuring the company’s complete line of oral fluid and hair drug testing products and services. Avitar now offers B2B (business-to-business) on-line sales through the company’s new web site avitarinc.com. Along with other product information and investor and corporate news, the site is designed to offer easy order placement to existing customers and to promote the unique benefits of oral fluid and hair testing to potential clients.

"Because we are in the business of selling advanced drug testing solutions, Avitar recognizes the importance of providing our clients with the ease of direct access to our products and services. Our enhanced Internet presence will allow Avitar to reach out to thousands of small-to-medium size businesses, corporations, schools and law enforcement sectors," said Peter Phildius, Avitar’s Chairman and Chief Executive Officer.

"This is the first time that Avitar has used a single Internet presence to promote the company’s oral fluid and hair testing technologies and the services of our laboratory facility, United States Drug Testing Laboratories (USDTL)," said Michael DeFeo, Director of Marketing of Avitar. "Oral fluid technology is one of the fastest growing segments of drug testing and its unique benefits over urine testing are attracting clients from a wide variety of markets. By targeting small-to-medium size companies via the Internet, Avitar is in the unique position to capture this largely untapped market," said DeFeo.

Acquired by Avitar in July 1999, USDTL is a nationally recognized high-tech laboratory that confirms results of oral fluid and hair-based substance abuse tests. Avitar features a complete menu of end-user focused, easy-to-use drug tests, including ORALscreen™ 4 (TCOM), a rapid point-of-contact oral fluid test to detect positive presence of the major drugs of abuse: marijuana, cocaine, opiates and methamphetamine. Avitar’s specialized products and services are designed to meet the drug testing needs of such industries as construction, facility management and environmental safety, human resource management, law enforcement, occupational health and safety, retail and security.

Avitar, Inc. (AMEX:AVR) headquartered in Canton, Massachusetts, develops, manufactures and markets innovative medical devices based on core technologies in oral fluid diagnostics and customized polyurethane applications. The Company markets a unique portfolio of substance abuse testing products and services that include ORALscreen^TM, the world’s first rapid point-of-contact oral fluid test for drugs of abuse, HAIRscreen^TM, a laboratory-based test for long term drug abuse using hair, and several other specialized tests for drugs of abuse. Avitar also markets an oral fluid collection system for DNA testing as well as a proprietary line of polyurethane-based high tech medical devices. For more information, see Avitar’s website at avitarinc.com.

This release forward looking statements that are subject to risks and uncertainties, including the development and marketing of new applications and other risks that are detailed from time to time in the Company’s filings with the Securities and Exchange Commission.