Testing for Endophytes

OSU Seed Laboratory



David Stimpson, PhD
3291 SW Campus Way
Corvallis, OR 97331-3801
Tel. 541-737-4464
Fax 541-737-2126

  • Please contact the Seed Laboratory for sampling and packaging instructions.
  • Pest and Disease (dry seed inspection)
  • Endophyte test (chemical/immunoblot assay) seed
  • Broom-rape (Orobanche minor) in Red Clover and other species.
  • The laboratory operates on its fee income. As costs rise for supplies, equipment, and personnel, it is necessary from time to time to adjust the fee schedule.

For current prices please see the following website: https://seedlab.oregonstate.edu/testing-services/testing-fees

Endophyte Service Laboratory

We test feed materials for ergovaline, lolitrem B, and ergot alkaloids. For some test types, rush processing is available. Registered clients can use the "Commercial Client Log-In" link to submit samples for endophyte mycotoxin testing in a variety of feed substances and retrieve results once they are available. The website recently underwent a renovation, so returning clients will need to reset their password to log in. At this time, we are asking that all samples be submitted by dropping off in the sample bin of the Oak Creek Building parking lot or through the mail and not via in-person drop-off. USPS, UPS and FedEx will all deliver mail to our lab address:

Endophyte Service Laboratory
3015 SW Western Blvd.
Oregon State University
139 Oak Creek Building
Corvallis, OR 97331

In addition, individuals can find answers here to commonly asked questions, relevant scientific literature, and contact information for the laboratory. If you have any questions, please reach out to the laboratory by phone (541-737-9414) or email (Jennifer.Duringer@oregonstate.edu) and we will provide advice on setting up an account and proper sample collection/submission as well as answer any questions surrounding endophyte toxicoses that you may have.

For more information visit: https://emt.oregonstate.edu/endophyte-lab