Joe Troncoso

Milk Lab Process Manager - Microbiology

Joe became a member of our team in August of 2019. He specializes in microbiology conducting milk culturing and blood analysis. BS - Microbiology from Heritage University.


Madison Trevino

Lab Manager - Feed

Team member since September 2012, Maddie leads the feed team, provides client support, and keeps things running smoothly. Likely to greet you with a smile. BAS in Business Management with a minor in Agribusiness from Yakima Valley College.

Isela Vargas

Feed Lab Technician II

Isela is a senior lab tech specializing in Wet Chemistry analysis for the feed lab. Team member since March 2019, Isela is known for her precision and attention to detail.  


Crystal Maiden 

Technical Director/Data Scientist

Team member since June 2005, Crystal has helped shape Ag Health Laboratories development and growth in support of clients needs. Crystal's primary duties include research, data management and analysis, as well as assay and method development within the lab. BS in Animal Science from Washington State University. (GO COUGS!!).

Lynn VanWieringen, PhD       

Director - Feed and Forage 

July 4, 1971-September 16, 2023

Our beloved Lynn, 52, passed away after fighting her battle with brain cancer. Her smile, dedication, and nutritional wisdom will be missed at Ag Health Labs and throughout the cattle nutrition community for years to come. We love you Lynn! 


Fred J. Muller, DVM 

President - Ag Health Labs      
Founder and owner of Ag Health Labs, Dr. Muller is a practicing Veterinarian specializing in bovine health and milk quality with over 25 years of industry experience. DVM from Washington State University in 1997 and BS in Animal Science from Washington State University in 1993.

Ag Health Laboratories provides premium testing and analysis services in support of Ag Producers, with the intent of informing higher quality and precision management in support of effective operations and animal welfare.