IDEXX Announces IDEXX PRRS X3 Ab Test

WESTBROOK, Maine, October 13, 2011—IDEXX announces the U.S. release of its IDEXX PRRS X3 Antibody Test for porcine reproductive and respiratory syndrome (PRRS). The USDA-licensed indirect enzyme-linked immunosorbent assay (ELISA) detects PRRS antibodies in serum starting as early as eight days after exposure. This single-well assay delivers two significant improvements over its predecessor: 99.9% specificity, and a 90% reduction in false-positive singleton reactors. It's also proven to detect a broad array of PRRS isolates from around the world. Since 2004, laboratories and veterinarians in 74 countries have used IDEXX PRRS tests more than 20 million times due to its high degree of accuracy, ease-of-use, and reliability.

"By delivering unprecedented specificity with fewer false positives, the IDEXX PRRS X3 Ab Test lets laboratories run more smoothly without needing to plan their schedule around confirmation tests," says Olivier te Boekhorst, Vice President and General Manager, IDEXX Livestock and Poultry Diagnostics. "As laboratories outside the U.S. have found, dramatically reducing confirmatory testing means veterinarians get reliable results more quickly. That, coupled with the test's ability to detect multiple PRRS strains, allows veterinarians to provide faster diagnoses that help their customers make more confident, informed decisions about herd health. This is especially important with regard to PRRS, as it's one of the most economically devastating diseases in swine production, with annual losses in the U.S. alone estimated at over $664 million."

The PRRS virus genome changes very quickly, so a test that detects different serotypes is essential for efficiently managing the virus. The IDEXX PRRS X3 Ab Test is proven to detect antibodies against U.S. and European strains. In addition, the test has successfully detected the recently isolated Eastern European strain.

"Since implementing the IDEXX PRRS X3 ELISA in April of last year we have been very pleased with the performance," says J.K. Johnson, DVM, Department of Veterinary Diagnostics and Production Medicine, College of Veterinary Medicine, Iowa State University. "It has good plate-to-plate repeatability and the data indicates a dramatic improvement in specificity. Client responses are overwhelmingly positive with the switch to the IDEXX PRRS X3 ELISA."

For more information or to order the new IDEXX PRRS X3 Ab Test, please contact Lisa Lemieux, IDEXX North American Sales, at 1-207-807-3822 or

About IDEXX Livestock and Poultry Diagnostics
For more than 25 years, IDEXX Livestock and Poultry Diagnostics has focused on improving the health of the world's food animals. Personnel around the globe work closely with customers, key opinion leaders, regulatory officials and agency heads to set up diagnostic testing programs. Rigorous quality control includes ISO certification and approvals from the USDA and international regulatory agencies that ensure quality, repeatability and reliability of test results. A global distribution network, an intimate knowledge of local conditions and languages and a seasoned, experienced staff make IDEXX uniquely qualified to provide laboratories, veterinarians and producers with diagnostic tests and technologies they can trust. The IDEXX portfolio addresses more than 50 pathologies affecting bovine, small ruminant, porcine, poultry and equine species.

About IDEXX Laboratories
IDEXX Laboratories, Inc. is a leader in pet healthcare innovation, serving practicing veterinarians around the world with a broad range of diagnostic and information technology-based products and services. IDEXX products enhance the ability of veterinarians to provide advanced medical care, improve staff efficiency and to build more economically successful practices. IDEXX is also a worldwide leader in providing livestock and poultry diagnostic tests and tests for the quality and safety of water and milk. Headquartered in Maine, IDEXX Laboratories employs more than 4,800 people and offers products to customers in over 100 countries.


IDEXX Laboratories
Rebekah Hildreth
Marketing Manager