Control of plant diseases begins with accurate identification of the causal agent; viruses are particularly difficult to identify by symptoms alone. The Virus Diagnostic Lab (formerly ELISA Lab) was created in 1980 at the Washington State University Prosser Irrigated Agriculture Research and Extension Center to provide virus identification to cherry growers so they could make informed decisions about disease management in their orchards. Now under the auspices of the CPCNW, we offer extensive laboratory testing services to help a wide variety of crop growers reduce the spread of disease caused by virus and virus-like pathogens. We provide testing for many viruses that infect a wide range of fruit, vegetable, seed, forage, and horticultural crops.
The CPCNW offers ELISA (enzyme-linked immunosorbent assay), PCR (Polymerase Chain Reaction) and High-throughput testing (sometimes referred to as next-generation sequencing) testing options for rapid and accurate information to our customers. We routinely test for viruses in the following commodities:
- Alfalfa: alfalfa latent virus, alfalfa mosaic virus
- Apple trees: apple chlorotic leafspot virus, apple mosaic virus, tomato ringspot virus and more
- Asparagus: asparagus virus 1, asparagus virus 2, tobacco streak virus
- Beans: alfalfa mosaic virus, bean common mosaic virus, bean common necrosis virus, mosaic virus,
peanut stunt virus, tobacco ringspot virus, tobacco streak virus, tomato ringspot virus
- Corn: high plains disease virus
- Grapes: grape leafroll virus, red blotch and more
- Hops: hop stunt viroid, apple mosaic virus, generic carlavirus screen and more
- Stone fruit trees: apple mosaic virus, cherry leaf roll virus, prune dwarf virus, Prunus necrotic ringspot virus, tomato ringspot virus and more
- Peas: pea enation mosaic virus, pea leafroll virus, pea seed-borne mosaic virus
- Roses: apple mosaic virus, Prunus necrotic ringspot virus, tobacco streak virus
- Small fruits & berries: tobacco streak virus, tomato ringspot virus
- Vegetables: cucumber mosaic virus, squash mosaic virus, tobacco ringspot virus
All of our testing services are available for a fee to growers, field consultants, county agents, regulatory agencies, researchers, and the general public.
Dropping off Samples:
All samples must be accompanied by a Virus Diagnostic Lab Testing Agreement.
Hours and Location
- Hours: 7:30 AM – 4:00 PM, Monday – Friday
- Location: 24106 N. Bunn Rd., Prosser, WA 99350
Please contact VDL Lab Manager Tina Vasile (509-786-9382) for pricing information and to discuss the availability of tests not listed here