Marshfield, Wisconsin

If you need high-quality food, water, environmental, or milk testing services in Wisconsin, it’s only natural that you want the absolute best. With over 50 years of experience under our belt, we are your go-to testing service for edible, perishable, and time-sensitive products and have experience working with dairy plants throughout the state.

We understand how to process delicate and time sensitive materials and deliver accurate results.


Choose our Marshfield, laboratory for food testing, pathogen testing, water testing, environmental testing and milk testing services.


At our Marshfield laboratory, you’ll benefit from our:

  • Superior customer service
  • Timely turnaround
  • Convenient sample pick-up routes
  • Multiple report options available – including Excel, PDF, and other electronic formats


To ensure reliable results, we routinely evaluate our performance with internal controls, including check samples, client duplicate samples and re-analysis of archived samples. AgSource Laboratories in Marshfield maintains certifications from:

Contact Marshfield Laboratory

A: 3700 Downwind Drive
Marshfield, WI 54449
P: 715.898.1402
E: [email protected]

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