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Diagnostic Externship Program

The focus of the Diagnostic Externship Program is to expose veterinary students to diagnostic veterinary medicine in a publicly subsidized animal health laboratory.  As the focus is diagnostics, treatment of individual animals for illness or injury is not an aspect of the externship.  Externs typically stay for one to four weeks between late January and early May, during the annual peak of routine diagnostic cases in food animals.  Major objectives are to acquaint the veterinary student with:

  • The role of diagnostic pathologists in performing necropsies

  • The role of ancillary disciplines (e.g., microbiology, toxicology, and serology) in establishing the basis of illness or death in animals

  • The interaction with veterinary clients

  • Examples and research studies of major diseases of livestock and companion animals

externs at a microscope





All third or fourth year, rabies-vaccinated students in good academic standing from an accredited college of veterinary medicine are eligible for the externship.  Preference is given to students attending veterinary colleges in the United States or Canada.  Each participant must also have his/her own health insurance.  With only two to four externships available per year, students with the best qualifications, as demonstrated by resume and academic standing, are chosen for a given time period.




Questions and Applications

Apply by letter or email to the head of the Diagnostic Externship Program (see below) in the Department of Veterinary Sciences at the University of Wyoming.  Please provide a resume of professional and academic experience and include the time period(s) preferred for the externship in a cover letter.  A letter from the applicant’s academic dean indicating approval of the externship is also required.


Please contact the head of the Diagnostic Externship Program with applications and questions:


Dr. Donal O'Toole MVB, PhD, MRCVS, DipECVP, FRCPath

Department of Veterinary Sciences, University of Wyoming

Wyoming State Veterinary Laboratory

1174 Snowy Range Road

Laramie, Wyoming 82070

Phone: (307) 766-9976

Fax: (307) 721-2051


necropsy in a tyvek suit
Contact Us

College of Agriculture & Natural Resources

Department of Veterinary Sciences

1174 Snowy Range Rd

Laramie, WY 82070

Phone: 307-766-5059

Fax: 307-721-2051


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