
Diagnostic Laboratories
What we do
Penn Vet offers diagnostic laboratory services to referring veterinarians for their patients. Our sections encompass anatomic pathology, clinical pathology and cytology, microbiology, and parasitology.
Precise diagnosis is imperative in determining successful treatment protocols and providing the highest-level of animal care, whether you are an animal owner, caretaker, or a referring veterinarian. For that reason, Penn Vet’s cross-disciplinary team of specialized, board- certified faculty, clinicians, residents, technicians, and knowledgeable administrative staff are here to assist with all of your diagnostic testing needs. We provide consultations, inter-laboratory collaboration, and a cooperative approach to maximize your diagnostic capabilities.
Review our Guidelines and forms
Resources for Clinicians
Please review and download and fill out the necessary forms. Also, make sure to read the general submission guidelines document for Penn Vet Diagnostic Laboratories.
Review our Guidelines and forms
Resources for Clinicians
Please review and download and fill out the necessary forms. Also, make sure to read the general submission guidelines document for Penn Vet Diagnostic Laboratories.
Diagnostic Focus
Laboratory Sections
Penn Vet offers a number of laboratory services and sections, including anatomic pathology, clinical pathology and cytology, microbiology, and parasitology.
Diagnostic Focus
Laboratory Sections
Penn Vet offers a number of laboratory services and sections, including anatomic pathology, clinical pathology and cytology, microbiology, and parasitology.
Anatomic Pathology – Biopsy and Autopsy Services
The Biopsy and Autopsy Services have provided sample interpretation for veterinarians across the nation and abroad for more many years.
The Biopsy Services include the general biopsy service and specialty biopsy services, which include dermatopathology, lymphoma subtyping, neuropathology, ophthalmic pathology, osteopathology, and oral pathology.
The Autopsy Service provides complete gross and histopathologic examinations on patients by referral from veterinarians. Refer to the referral autopsy submission guidelines. Veterinarians can perform postmortem exams, and tissues can be submitted via the Biopsy Service.
Laboratory Details:
- Monday – Friday: 8:00 AM to 5:00 PM
- Phone: (215) 898-8857
- Fax: (215) 898-0719
- Email: pennvethistolab@vet.upenn.edu
Clinical Pathology
The Clinical Pathology lab is not accepting new clients at this time.
Our clinical laboratory provides routine to advanced testing in a wide variety of disciplines including: hematology, clinical chemistry, endocrinology, urinalysis, coagulation, and immunohematology. The cytopathology service, with its team of onsite board-certified pathologists, is also available for collaborative case work and veterinary consultations.
Laboratory Details:
- Monday – Friday: 8:00 AM – 5:00 PM
- Saturday/Sunday: 9:00 AM – 1:00 PM
The turnaround time for cytology submissions is one to three days. STAT submissions arriving by 3:30 PM will be read the same day.
- Phone: 215-898-8877
- Fax: 215-898-9352
- Email: clinicallab@vet.upenn.edu
Microbiology
Our clinical Microbiology Laboratory performs aerobic, anaerobic, fungal, and mycobacterial cultures, along with appropriate antibiotic susceptibility testing for patients of both the Ryan Veterinary Hospital and practices across the US. Our clinical microbiologist is onsite and available for consultations daily. The laboratory has a specific expertise and extensive experience with dermatologic infectious disease and work closely with our dermatopathology and cytology services.
Laboratory Details:
- Monday – Friday: 8:30 AM – 4:00 PM
- Phone: (215) 898-7858
- Fax: (215) 898-0503
- Email: parasitology@lists.upenn.edu
Parasitology
Our Parasitology Laboratory provides diagnostic services for both large and small animal patients and the Pennsylvania Animal Diagnostic Laboratories (PADLS). Fecal examinations, parasite identifications, quantitative fecal egg counts and serologic testing of vector-borne infections are just a few on the services we are able to provide to submitting veterinarians.
Laboratory Details:
- Monday – Friday: 8:30 AM – 4:00 PM
- Phone: (215) 898-7858
- Fax: (215) 898-0503
- Email: parasitology@lists.upenn.edu
Diagnostic Team
Anatomic Pathology

Hayley Amerman, DVM, DACVP
Clinical Pathology
Stefano De Arcangeli, DVM, PhD
Resident, Clinical Pathology
Nathan Fanzone, VMD
Resident, Anatomic Pathology
Devin Fussell, DVM
Resident, Anatomic Pathology
Nicole Hamlin, DVM, MS
Resident, Anatomic Pathology
Karuna Katariwala, DVM
Resident, Clinical Pathology
Victoria Leopardi, VMD
Resident, Anatomic Pathology
Lillian Miller, DVM
Resident, Anatomic Pathology
Maho Okumura, VMD, MPH
Resident, Clinical Microbiology
Hannah Reichert, DVM
Resident, Anatomic Pathology
Brianna Stoyle, DVM
Resident, Anatomic Pathology
Ryan Veterinary Hospital
Emergencies:
(215) 746-8911
By Appointment:
(215) 746-8387