Euro-Diagnostica 

Products are used within the clinical auto-immunology, microbiology, histology/cytology and immunochemistry fields. Their products also ensure accurate detection of contaminants in feed and food.

http://www.eurodiagnostica.se/

IDEXX Laboratories^*

IDEXX provides tools for monitoring the health of production animals, such as cattle, swine and poultry. IDEXX also provides diagnostics for detection of microbiological contamination of drinking water, and for screening of antibiotic residues in milk.

http://www.idexx.com/

Veterinary Laboratories Agency (VLA) ^*

The VLA has over 100 years of experience in the diagnosis and control of important diseases of farm livestock. Over the years they have developed and marketed both individual reagents (mainly antigens & antibodies) and  diagnostic kits. 

http://www.defra.gov.uk/corporate/vla/

VMRD, Inc ^*

VMRD produces veterinary diagnostic kits and reagents.
http://www.vmrd.com/