950 West Chiles Road, Davis, CA, United States of America, 95618


(800) 506-9852


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Your Trusted Grapevine Testing Resource

Agri-Analysis LLC, located in Davis, CA, 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 use state-of-the-art technologies such as ELISA, PCR, RT-PCR, qPCR, DNA sequencing, fluorescence, bioluminescence, chemiluminescence and nanotechnology to detect and identify specific viral, bacterial and fungal pathogens in plant material, seed and soil. Our grapevine VINEGUARD testing services can help clients: 1) Source and screen new planting materials such as budwood and rootstocks; 2) Survey the health status of existing vineyards; 3) Meet requirements of federal, state, and local programs such as the Tree Assistance Program (TAP); 4) Meet requirements of various sustainability programs; 5) Diagnosis of vineyard abnormalities such as low Brix; 6) Due diligence in vineyard transactions for both buyers and sellers. 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.

Today, Agri-Analysis LLC is owned and operated by Dr. Alan Wei.  Dr. Wei has more than 25 years academic and industry experience in developing microbial detection technologies and products, ranging from high sensitivity ELISA, PCR, qPCR, high throughput screening and in-field methods. He has more than 20 issued United States’ Patents in this and related areas. Dr. Wei is passionate about working with growers to learn from them, to help solve their problems, to aid in their informed decision-making process, and to help them protect their investments. Through constantly striving for excellence in service and innovation, Agri-Anlysis has earned the reputation to be the most reliable laboratory that tests for Red Blotch virus and other grapevine viruses.  Contact Dr. Wei at apwei@agri-analysis.com.                                                       


As the world is 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 across multiple industries worldwide through knowledge, experience, innovation, dedication, cooperation and uncompromising integrity and professionalism.


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Agri-Analysis LLC 950 West Chiles Road, Davis CA United States of America 95618

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