PennGen is a genetic testing facility operated through the Section of Medical Genetics at the University of Pennsylvania's School of Veterinary Medicine. It is a collection of laboratories that coordinate as a not-for-profit unit, offering routine testing for a variety of genetic diseases, metabolic screening for inborn errors of metabolism, and a number of other diagnostic genetic services. PennGen also engages in research to uncover the genetic basis of a wide range of diseases in domestic animals.

Hereditary diseases of companion animals are an important problem for breeders and owners. More than 900 inherited disorders have been identified in the dog and over 200 in the cat. The Section of Medical Genetics at the School has been in the forefront of reporting hereditary diseases in companion animals for more than 40 years. Many diseases were first discovered by Penn researchers who often also characterized the disease course, determined the mode of inheritance and developed tests to identify affected animals. Since most of the diseases are recessively inherited, tests to identify carriers who are clinically asymptomatic but can pass on the abnormal (mutant) gene have been developed. With recent advances in molecular genetic technology, several DNA-based tests which are more accurate have been introduced.

The genetic testing laboratory is enhanced by weekly Pediatrics and Genetics Clinics at The Matthew J. Ryan Veterinary Hospital of the University of Pennsylvania to provide counseling and advice on the management of affected animals and on breeding companion animals free of genetic diseases and will aid in the identification of new hereditary diseases. 

The Genetic Testing and Counseling Program has become a reliable resource at an affordable rate. It is a non-profit operation under the auspices of the Matthew J. Ryan Veterinary Hospital of the University of Pennsylvania, supported by donations and modest service fees.

Josephine Deubler Genetic Disease Testing Laboratory

The School of Veterinary Medicine at the University of Pennsylvania has established the Josephine Deubler Genetic Disease Testing Laboratory. The laboratory is part of a service that encompasses a genetic testing and counseling program in the School's Section of Medical Genetics. It is named after the School's first female graduate, Dr. Josephine Deubler, V'38. She passed away in 2009 at the age of 92. Until her death she was active in the world of dog showing/breeding and judging, penned a regular veterinary advice column, served on the school faculty until 1987 and was active in school affairs.
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