Oklahoma Animal Disease Diagnostic Laboratory

01/26/2026

Due to inclement weather conditions, the OSU–Stillwater campus and OADDL will open at 10:00 a.m.
OADDL will follow its Inclement Weather Policy. Emergency services will be available from 8:00 a.m. to 10:00 a.m.; however, if your needs are not urgent, we encourage you to wait until 10:00 a.m. to submit Necropsy and Rabies specimens.
Non-necropsy specimens may be deposited in our drop box, mini-refrigerator or incubator in the Receiving vestibule 24/7.
Properly boxed Rabies may be dropped off at any time. Please follow instructions on signage at our Receiving entrance.
For Necropsy services, please call 405-744-6623 between 8am and 10am to schedule with the on-call employee.
Shipping delays may occur and test results could take longer than published turnaround times.

Thank you for your understanding and cooperation as we prioritize everyone’s safety.
~OADDL

01/25/2026

OSU-Stillwater Campus will be closed Monday due to inclement weather conditions.
OADDL will be following its Inclement Weather Policy and will be available for Emergency services as weather permits.
Non-necropsy specimens may be deposited in our drop box, mini-refrigerator or incubator in the Receiving vestibule 24/7.
Properly boxed Rabies may be dropped off at any time. Please follow instructions on signage at our Receiving entrance.
For Necropsy services, please call 405-744-6623 between 8am and 5pm to confirm staff availability and scheduling. Weather may prohibit intake of animals.
Shipping delays may occur and test results could take longer than published turnaround times.

Thank you for your patience and understanding.
Please stay safe.

01/23/2026

As winter weather prepares to move into Oklahoma, now is the time to make sure you and your livestock are ready!

Our State Veterinarian has some tips on things to do before & during winter weather to help protect your livestock:

01/23/2026

12/19/2025

ANIMAL DISEASE ALERT:

Please be aware that Texas and Arkansas have confirmed cases of Highly Pathogenic Avian Influenza in the past few days.

These cases, combined with the confirmation of recent positive results in several wild waterfowl in Oklahoma, means that the virus is present and is a grave danger to Oklahoma poultry.

Ensure you are protecting your flock by increasing biosecurity measures, and report cases of HPAI or suspicious poultry behavior to ODAFF at 405.522.6141

11/25/2025

🚨News To Know🚨

🔬Our Receiving Vestibule is open 24/7🔬

Need to drop off samples after hours? We’ve got you covered.

Our vestibule has three storage options to keep your submissions secure and properly maintained at any time of day.

Forgot your form? No worries — blank forms are available inside on the north wall.

Instructions ➡️ https://okla.st/4pR9Qnp

More information about testing and our diagnostic lab ➡️ https://okla.st/4ipb9Y3

Submission forms for various tests

11/24/2025

🚨 KNOW BEFORE YOU TEST 🚨

If your horse needs testing for Equine Herpesvirus (EHV), here’s what to know:

🧪 How To Collect Correct Samples:
• One deep nasal swab (synthetic or flocked swab with plastic handle; no gel-based swabs)
• One EDTA (purple-top) blood tube — minimum 5 mL

🧼 Biosecurity Matters:
Wear gloves, change them between horses, and disinfect hands to prevent spread.

📦 Shipping Tips:
• Keep samples cold, not frozen
• Ship overnight via UPS/FedEx for best results
• Discounted shipping labels available on the OADDL website
• Samples may be hand-delivered or placed in the after-hours drop refrigerator

More testing information ➡️ https://okla.st/4igEUKq

11/19/2025

❗️Please submit your samples❗️

❗️EHV OUTBREAK TESTING❗️

🔬OADDL is ready and prepared for your EHV test🔬

If your horse needs testing, please submit a deep nasal swab along with an EDTA (purple-top) blood tube.

If you have any questions, contact the lab at 405-744-6623.

Collecting the test:

❗️Deep Nasal Pharyngeal synthetic swab
❗️Avoid cotton swabs
❗️Keep the sample chilled

11/19/2025

EHV Outbreak Testing at OADDL
We have confirmed two positive cases of EHV-1 in the state from horses with neurologic signs. If your horse needs tested, please submit a deep nasal swab and an EDTA (purple top) tube of blood.
Call the lab with any questions at 405-744-6623.
Stay safe, quarantine!

11/19/2025

***UPDATE***

As of 9 a.m. on Wednesday, Nov. 19, there are multiple confirmed cases of Equine Herpes Myleoencephalopathy, the neurologic form of EHV-1 and exposure risks in horses that attended the WPRA Finals in Waco, Texas between Nov. 5 and Nov. 9. We have confirmed two cases of EHM in horses that attended the Barrel Futurities of America World Championship at Lazy E Arena this week.

The BAF World Championship has been cancelled and horses who were at either event should be taken home, isolated, and quarantined for the next 14 days.

EHM spreads through horse contact, shared buckets and/or tack, contaminated trailers, airborne droplets from horses coughing or snorting and from people who handle exposed horses. Exposed horses that were at either of the events should be isolated at least 30 feet, but as far as possible, from other horses. Efforts to prevent air movement from exposed horses to unexposed horses should be made. Exposed horses are not allowed to move off the home premises until they have completed 14 days with no symptoms. Unexposed horses may travel to events, although it is recommended, they do not leave the premises unless truly necessary.

Owners should watch for:
Fever over 101.5
Nasal Discharge
Lethargy
Hind end weakness
Any neurological issues

If you notice any of the symptoms, please contact your veterinarian immediately. Cases that show neurological issues are considered a medical emergency.

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ANIMAL HEALTH ALERT

The Oklahoma State Veterinarian has been made aware of a possible Equine Herpesvirus Myeloencephalopathy exposure at the WPRA event in Waco, Texas Nov. 5 through Nov. 9.

We are working closely with Lazy E Arena, as some of the horses from the WPRA event could be in Guthrie this week for the Barrel Futurities of America World Championship.

If you are from Oklahoma and were at the WPRA event – it is recommended you go home and quarantine your horse. If EHM is confirmed, horses who were in the Waco event will be required to quarantine at home.

Owners should monitor the temperature of their horse for spikes of 101.5 or above and increase biosecurity measures.

For questions about quarantine or EHM exposure, call the Oklahoma State Veterinarian's office at 405.522.6141.

Updates will be provided as they become available.

11/15/2025

**UPDATE**

As of 7:30 a.m. on Friday, Nov. 14, a second case has been confimed in a backyard flock in McClain County.

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ANIMAL DISEASE ALERT: A positive case of Highly Pathogenic Avian Influenza has been confirmed in Grady County.

Flock owners should take every precaution to protect their flock by preventing their poultry’s exposure to wild birds and any areas where wild birds have been.

Sick domestic birds should be reported to ODAFF immediately at 405-522-6141.yn

10/23/2025

❗️Attention Swine Exhibitors❗️

As a reminder, the time is approaching for show swine to be getting ready for the winter and spring show season. Swine must be tested negative for Brucellosis and Pseudorabies on or after November 10 to be eligible to show through OYE without additional testing.

For more information regarding swine testing, visit our website ➡️ http://bit.ly/43zklTj