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Animal and Plant Health Inspection Service
U.S. Department of Agriculture
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General NVSL Information


The National Veterinary Services Laboratories (NVSL) safeguard U.S. animal health and contribute to public health by ensuring that timely and accurate laboratory support is provided by their nationwide animal-health diagnostic system. NVSL staff accomplish this through:

  • Providing diagnostic services, reagents, and training in world-class facilities
  • Responding to animal health emergencies
  • Taking an active role in managing the National Animal Health Laboratory Network (NAHLN)
  • Serving as an international reference laboratory
  • Maintaining a well-trained and responsive staff

Environmental Management System statement

Quality Assurance The NVSL Quality Management System is accredited to ISO 17025, ISO 17043, and ISO Guide 34. Click here to learn more about the NVSL Quality Management System and the scope of accreditation.


The NVSL actively participates in various scientific organizations and international activities. NVSL authors often publish papers about their work. Click here to see additional information on NVSL Activities.


The National Veterinary Services Laboratories (NVSL) has laboratories in two locations: Ames, Iowa and the Foreign Animal Disease Diagnostic Laboratory (FADDL) at Plum Island, New York. Diagnostic test services range from a single laboratory test to comprehensive laboratory services covering many pathogens for a suspected disease outbreak. The NVSL includes four laboratory units and the NAHLN program office:

NVSL Organization Chart

History of the NVSL

The NVSL is co-located with the National Animal Disease Center (USDA-ARS) and the Center for Veterinary Biologics to form the National Centers for Animal Health

Contact US

Click here for contact information and hours of operation.

Interested in working for the NVSL? If so, search job openings at

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