Bacteriology and Mycology


The Bacteriology/Mycology Section at WADDL provides extensive testing options for fast and accurate diagnosis of infectious disease. We aid veterinarians, producers, researchers and owners by identifying pathogenic bacteria and fungi and will assist in interpretation of test results to make the best decisions possible for animal health.

WADDL is fully accredited by the American Association of Veterinary Laboratory Diagnosticians (AAVLD) and a Level 1 laboratory in the National Animal Health Laboratory Network (NAHLN) giving clients the confidence in the quality and accuracy of test results. We have microbiologists available to answer questions as well as free consultation with subject matter experts such as the Bacteriology/Mycology Section Head, Dr. Claire Burbick, who is board certified by American College of Veterinary Microbiologists (ACVM) in the specialties of Bacteriology/Mycology, Virology, and Immunology.

The Bacteriology/Mycology Section is available to consult for the following:

  1. Sample submission
  2. Specimen transport
  3. Herd health
  4. Diagnostic Plans
  5. Optimizing disease prevention strategies
  6. Test interpretation
  7. Antimicrobial susceptibility testing Interpretation
  8. Antimicrobial therapy


Lab Technician at computer
WADDL Bacteriology utilizes Matrix Assisted Laser-Desorption Ionization Time of Flight Mass Spectrometry (MALDI-TOF), as well as traditional testing methods, for the identification of bacteria and fungi. Typically, results are reported in 24-48 hours for most cultures.

Our most common tests.
  1. Aerobic and anaerobic culture for the isolation of bacterial pathogens
  2. Caseous Lymphadenitis (CL) culture
  3. Dermatophyte culture
  4. Fungal culture
  5. Mastitis culture
  6. Mycobacterium culture
  7. Mycoplasma sp. culture
  8. Listeria culture
  9. Comprehensive testing for gastrointestinal pathogens such as Salmonella sp., Campylobacter sp., E. coli, Clostridium perfringens and C. difficile.

Antimicrobial Susceptibility Testing

Antimicrobial Susceptibility Testing image collage

We perform antimicrobial susceptibility testing for both aerobic and anaerobic bacteria using broth microdilution and Kirby-Bauer methods. Once a bacterial pathogen has been isolated, results are generally available within 24-48 hours. We commonly encounter questions concerning antimicrobial susceptibility testing and are available for consultation to assist in interpretation, guidance on antibiotic choice and antibiotic stewardship.


To provide comprehensive testing, as well as help take the guess work out of the costs, WADDL provides diagnostic panels for aerobic culture with susceptibility, abortion, diarrhea, and respiratory disease. Please visit our test search tool and click on the panels tab to see the species-specific panels offered at WADDL.

Sample Submission

Good sampling practice is essential to accurate test results. Please visit the Bacteriology Sample Submission page and our test search tool for sample submission guidelines. We are happy to provide guidance for any submission questions at 509-335-9696.


Part of WADDL’s mission is to contribute to scholarly activity within the Washington State University community as well as at other research institutions. The Bacteriology/Mycology Section is available to collaborate with researchers investigating animal disease or other projects supporting animal health. We can customize testing and perform large volume testing to provide high quality data.

MALDI-TOF mass spectrometry is also available and can be utilized in various research and pathogen discovery projects. Currently, WADDL is using the MALDI- TOF to develop in-house protein fingerprint libraries for identification of bacteria of interest, as well as peak analysis to identify differences related to taxonomy and virulence.

Please contact us if you are wondering if WADDL can support your research goals at 509-335-9696.