The CPL (Comparative Pathology Lab) can provide both anatomic and clinical pathology services to support diagnosis of animal health issues and to evaluate research questions.

Diagnostic - The lab performs diagnostic necropsies for all UW research colonies and University animals to determine not only cause of death (or illness) but also the effects of instrumentation, research procedures, or genetic manipulation. Microbiology (including virology), parasitology, and histopathology on necropsy and biopsy specimens are also done routinely. If an Animal Welfare Act-covered species is found dead, it must be necropsied.

Outside submissions are accepted for most species of animals. While the lab accepts submissions of live rodents and small laboratory animals, larger animals and primates must be euthanized prior to submission. Please call the lab at (608) 263-6464 if you have questions or to arrange a necropsy.

Phenotyping - Specialized phenotyping services are often needed to identify both expected and unexpected alterations that can arise in genetically engineered animals. Consultations can be arranged by contacting Dr. Ruth Sullivan at (608) 262-8740,

Research Studies - A variety of pathology services can be provided to research investigators. They vary from methodology advice on proper tissue collection, fixation, processing, slide preparation, and staining to the interpretation of the pathology slides. Evaluation of pathology results can be done on a “fee for service” basis and as a collaboration. Optimal results are obtained when the pathology staff is contacted as early in the formative process as possible; this allows us to help determine how and in what way pathology can best support the research aim. As the lab's pathologists vary in their specializations and interests, please contact the lab to determine which pathologist would best suit your research needs.

Toxicology Research - Toxicologic pathology evaluations can be done in support of small non-GLP studies.

Clinical Pathology - Hematology and chemistry tests are run through the clinical laboratory at the School of Veterinary Medicine. We can arrange for submission of samples and interpretation of results if needed.