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Welcome to the Bacteriology Laboratory

Bacteriologists isolate and identify bacterial and fungal pathogens. Specimens may be taken at necropsy or from live animals.

  • Tests are run for numerous bacterial pathogens including potential agents of bioterrorism.
  • Bacterial antibiotic susceptibility tests are also performed to identify antibiotic-resistant bacteria and determine optimal therapeutic options.
  • We have expertise in Salmonella culture from animals and the environment.

We process more than 30,000 samples annually, and also work with the Colorado State University Veterinary Teaching Hospital’s biosecurity program to assure timely and accurate identification and prevention of in-hospital infections.

Our specialties include:

  • Antimicrobial susceptibility
  • Anaerobic bacteria, including Clostridial diseases
  • Fungal pathogens
  • Campylobacter and Mycobacteria culturing
  • Rapid identification and PCR assays for bacterial pathogens
  • Testing for contagious equine metritis
  • Serologic assays for many organisms including B. canis and M. paratuberculosis (Johne’s disease)

Our special equipment includes:

  • Anaerobic chamber
  • Biolog Microbial ID
  • Biomic Antimicrobial Susceptibility Testing
  • Trek ESP for liquid culture of Mycobacterium paratuberculosis

 Diagnostic Testing

TB cultures in a petrie dish

The Veterinary Diagnostic Laboratory at Colorado State University offers multiple choices when it comes to diagnostic tests for Mycobacterium avium ssp. paratuberculosis.

Contact Us:

USPS Mailing Address:
200 West Lake Street
1644 Campus Delivery
Fort Collins, CO 80523-1644

Our address has changed! We are still in the same building but the address has been updated:
FedEx/UPS Shipping Address (physical address):

2450 Gillette Drive
Fort Collins, CO 80526

(970) 297-1281

(970) 297-0320


Monday through Friday
8 a.m. to 5 p.m.
Note: Samples are not processed on Saturdays or Sundays so it is suggested to ship samples to arrive in our facility Monday through Friday only.