Fees

On June 1, 2024 a new fee schedule has been implemented at the Texas Plant Disease Diagnostic Laboratory. The following is a detailed list of the current fee schedule.

If you have any questions regarding the specific tests listed below, visit our services tab for the type of sample needed and other details. Packaging and submission information can be found on our forms (D1178, D827, TPDDL1004). Please email plantclinic@tamu.edu or call us at 979-321-5390, if you have any other questions!

Since September 2021, we have utilized the current billing system that requires all new clients to fill out form AG-257 (link to form here).  This should only occur once to set up a customer no. with Texas A&M AgriLife Extension Service. If you have used other AgriLife Extension services, you may have completed this prior – please include your customer no. on the TPDDL form when submitting samples.  Completion of this form AG-257 is required for us to extend our ability to process your sample with necessary procedures for confirmatory diagnosis. The department contact is ‘COURTNEY OVERBY’ and department contact email is ‘courtney.overby@ag.tamu.edu’.

We can no longer bill customers without completion of the AG-257 form. IF a check is sent with your sample, then you will not need to fill out the AG-247 form and will not be billed after your report has been sent. We CANNOT begin any work on your submitted sample until we have a customer number in our system. 

If you are a homeowner and/or do not want to provide your identity information (SSN) on the AG-257, you can send a check (pre-pay) made out to Texas AgriLife Extension Service (in blue or black ink only) with your sample. Please note that we are only able to conduct analysis on the specific paid service that is requested and will not be able to pursue further analysis if needed for confirmatory diagnosis.

Routine Diagnostics (D-1178) $35/sample 
Nematode detection assay (plant or soil sample) (D-827) $35/sample
Out of State $20 surcharge/sample
SPECIALIZED TESTS – Special requests
Culture/Microscopic Observation

Oak Wilt

Dutch Elm Disease (DED)

Cotton Root Rot

Turfgrass Diseases

Covered under Routine Diagnostics Fee
ELISA-based testing

Bacterial 

Bacterial Leaf Scorch (Xylella sp.)

Bacterial Leaf Spot (Xanthomonas sp.)

Root rot

Phytophthora sp. Root Rot

Virusupon request

$20 surcharge/test request
Virus (Serological)

Serological (full panel listed is included in $20 surcharge)

Arabis mosaic virus (ArMV) 

Cucumber mosaic virus (CMV) 

Impatiens necrotic spot virus (INSV)

Tobacco etch virus (TEV)

Tobacco mosaic virus (TMV) 

Tomato ringspot virus (ToRSV)

Tomato spotted wilt virus (TSWV)

$20 surcharge
Rose Rosette (RRV) $40 surcharge

Beginning June 1, 2024

PCR Analysis (Molecular Detection)

Palm Phytoplasma Disease (Lethal Decline/Lethal Yellowing)

Ornamental Phytoplasma

Bacterial Leaf Scorch (Xylella sp.)

Palm Fusarium

Plant Pathogenic Bacterial ID

        Plant Pathogenic Fungal ID (PCR)

Citrus Greening/Huanglongbing

$40 surcharge/test request

Beginning June 1, 2024

GRAPE Testing (for commercial grape growers) (TPDDL-1004) 

Each of the first 5 samples will be assessed the full amount for each test performed, then subsequent samples will only be charged the routine diagnostic fee of $35.
Culture/Microscopic Observation

Cotton Root Rot

Covered under Routine Diagnostics Fee
ELISA-based testing

Pierce’s Disease (Xylella fastidiosa)

Phytophthora sp. Root Rot

$20 surcharge/test request
PCR Analysis (Molecular Detection)

Pierce’s Disease (Xylella fastidiosa)

$40 surcharge/test request

Beginning June 1, 2024

Phytoplasma and Rose rosette virus detection are processed approximately once a week, depending on sample submission. Turnaround time is 14-21 days. Please contact if need quicker turnaround for diagnostician/technician availability.

Oak Wilt processing, culturing, and detection is very extensive. Turnaround time is currently a minimum of 21 days. 

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