The Delaware Valley Veterinary Hospital uses both in-house laboratory equipment and commercial testing services to provide comprehensive testing and rapid results. Routine testing for blood counts and chemistries are done with state-of-the art equipment in the hospital and are available within hours. Other test results are usually available within 24 hours.

Among the laboratory services offered:
- Feline leukemia & FIV testing
- Heartworm testing
- Lyme disease testing
- Fecal floatation
- Urinalysis and microscopic examination of urine
- Complete blood counts
- Blood chemistry and electrolytes
- Cytology (microscopic examination of cells) of the skin and ears
- Culture and sensitivity
- Diabetes diagnosis and control
- Hormone levels, such as thyroid, cortisol, and progesterone
- Histology (microscopic examination of tumor cells)
- Testing for parasites such as giardia
- Testing for diseases such as anaplasmosis and ehrlichiosis