Services & Fees

Clinic Services Update (1/1/24)

Visit our Digital Diagnosis page to submit photos for a digital diagnosis.  A $20 fee applies.  Visit our Sample Collection and Submission page for details on the clinic’s current physical sample submission process.  Prices vary for this service.  For a complete list of fees, visit our Fees page.
If you are from outside Wisconsin, please contact the PDDC *before* you submit a sample.

Clinic Services

Wonder what the Plant Disease Diagnostics Clinic does and how you can take advantage of clinic services and staff expertise?  Check out our new brochure!

Clinic Services and Outreach Brochure (Updated January 1, 2024)

Fee Schedule

Effective January 1, 2023
Fees and services subject to change without notice.

Clinic Sample Submission Brochure (Updated January 1, 2024)

Standard Diagnostics Tests

Service Notes Fee
Digital analysis fee Examination of digital photos submitted via email.  Applied toward “Base Fee” (see below) if a follow-up physical sample is submitted. $20.00
Base fee Charged for all physical samples submitted from a single plant.  Includes visual and microscopic examination, and incubation in a moist chamber where needed. $25.00
Culturing fee Charged when fungal or bacterial pathogens need to be grown from samples.  Typically these fees would not exceed $10 per plant part (e.g., roots or branches) tested. $5.00
per plant part/growth medium combination
Dip stick serological test fee Includes (but is not limited to) tests for arabis mosaic, cucumber mosaic, fire blight, impatiens necrotic spot, Phytophthora diseases (e.g., root rot), potyvirus diseases, powdery scab, tobacco mosaic, tomato spotted wilt. $10.00
per test
ELISA serological test fee Includes (but is not limited to) the test for apple mosaic. $35.00
DNA-based (PCR) test fee Includes (but is not limited to) tests for crown gall, hops downy mildew and powdery mildew, oak wilt, phytoplasma diseases, powdery scab, soft rots (Pectobacterium spp. and Dickeya spp.), Xanthomonas diseases. $35.00
for the first test + $15.00 per each additional test
RNA-based (PCR) test fee Includes (but is not limited to) tests for carlavirus diseases, corky ringspot, potato mop top, tobacco rattle. $35.00
for the first test + $15.00 per each additional test
DNA-sequencing fee Used when other tests are inconclusive.  Fees for culturing and/or PCR would also apply for samples requiring sequencing. $35.00


Notes about Fees

The PDDC will make every effort to keep the cost of a diagnosis as low as possible.  Fees help cover the cost of equipment/supplies/labor needed to process a sample, but not covered by state or federal funds that the PDDC receives.  Fees also help support PDDC outreach programs throughout Wisconsin. 

 Please feel free to contact the PDDC to discuss possible tests and associated fees for your specific sample prior to submission.  If no specific testing requests or cost limitations are noted at the time of submission, the PDDC reserves the right to determine which tests are most appropriate for a given sample.

 In most instances, the fee for homeowner samples will be $50 or less.  Fees for most commercial samples will be $100 or less.  However, exceptions may arise. 

 Please *DO NOT* enclose a payment with your sample.  You will be billed for any work after your analysis has been completed and at the time that your report is sent to you. 

Reporting of Results

Most sample analyses are completed within two weeks (often more quickly).  Once results are available, submitters will receive a written report of the findings for a sample.  Reports, any supplemental information on the diagnosed disease, and an invoice are emailed to clients if an email address is provided with the sample.  If an email address is not provided, this information will be sent via snail mail.  For certain diagnoses (e.g.,. those of diseases of regulatory importance), clients will be contacted by phone.  A copy of results is also provided to Extension personnel in the county of origin of a sample.  This helps Extension offices provide better services to their local clientele.