Agri-Analysis :: Grapevine Testing :: Seed Testing since 1981.

You are here: To better serve you, Agri-Analysis is now located in Davis within walking distance to UCD campus.
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Testing for:
Lettuce Mosaic Virus Bacterial diseases Grapevine diseases Fungal diseases Seed Health Genetic Traits GMOs

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Our New Location:
950 West Chiles Road
Davis, CA 95618


Agri-Analysis LLC is a proud member of:

The Napa Valley Grape Growers Association

The California Seed Association

The American Phytopathological Society

Your Trusted Grapevine Virus Testing Resource

Agri-Analysis LLC is an independent agricultural diagnostic laboratory which provides clients with access to state-of-the-art laboratory techniques and procedures to answer their agricultural production problems. We employ enzyme-linked immunosorbent assay (ELISA), polymerase chain reaction (PCR), as well as traditional culturing and numeration methods to detect and identify specific viral, bacterial and fungal pathogens in plant material, seed and soil. Our customers include growers, management companies, growers associations, agricultural consultants, universities, research institutes, service laboratories, seed companies, real estate agents, and property owners, etc.

Agri-Analysis was founded in 1981 by plant pathologist Glenn Friebertshauser, who desired to establish his own laboratory to diagnose plant diseases after completing his studies in University of California, Davis. His interest spanned fungal, viral and bacterial pathogens of plants, vines, trees and soil. His initial service to the agricultural community was in the development of a commercially applicable assay for lettuce mosaic virus (LMV), allowing for screening of virus-free lettuce seed lots before planting. In the mid-80's he became interested in diseases of grapevines and saw the need in the industry for laboratory assays to diagnose the presence of viral pathogens such as fanleaf virus, leafroll associated viruses and corky bark virus. Later, he developed additional assays for the bacterium Xylella fastidiosa (causal agent for Pierce's Disease in grapes and almond leaf scorch) and fungal diseases, notably those associated with Esca, also known as young vine decline.


As growers are faced with increasing risks and challenges from economically important plant diseases, Agri-Analysis is your trusted laboratory partner in identifying, managing, and mitigating these risks and challenges through research, experience, innovation, cooperation and uncompromising integrity and professionalism.