Clinic Services and Information


The ISU Plant and Insect Diagnostic Clinic staff can diagnose plant health problems caused by diseases, insects or the environment. Also, they also can identify insects, plants/weeds, and fungi. Once they have diagnosed your disease or identified your insect pest, they can advise you on the best course of action to take.

Services, forms, and fees* for Iowa residents. Do not send money with your sample**.

Services (follow the link for service and sampling details) Submission Form Fee
Plant Problem Diagnosis (disease, insect, herbicide visual assessment, abiotic) PIDC 45 - Form $20.00***
Plant and Weed Identification PIDC 45 - Form $10.00
Mushroom Identification  PIDC 45 - Form $10.00
Insect Identification PIDC 45 - Form $10.00
Soybean Cyst Nematode (SCN) egg count PIDC 32 - Nematode Form $20.00
Nematode Identification (corn, turfgrass, fruit, and vegetables, etc.)  PIDC 32 - Nematode Form $35.00

* All our applies to standard morphological and microscopic diagnosis. Contact us before submitting an out-of-state sample for fees and restrictions. Additional fees may apply for specialized media, molecular and serological-based diagnostic methods. We will contact you before testing. 

**Your will receive an invoice with your diagnostic report. You will receive a billing statement from Iowa State University with billing information and where to submit payment.


***Fee applies for routine processing, standard morphological and microscopic diagnosis. Molecular and serological-based diagnostic methods may be available for additional fee, see details at Plant Problem Diagnosis page


Out-of-state residents

Contact us before submitting an out-of-state sample for fees and restrictions, or contact you local diagnostic clinic on the National Plant Diagnostic Network- NPDN

Contact Information and Directions

Plant and Insect Diagnostic Clinic

2200 Osborn Dr

327 Bessey Hall

Iowa State University

Ames, IA 50011

Directions to the clinic from I-35, as well as a map of our location on Iowa State University's campus, can be found here.
Phone: (515) 294-0581
Contact us via e-mail accepted at for general questions, for insect questions, or try our webform 

check out our video What Happens to a Sample at the Plant and Insect Diagnostic Clinic