Louisiana Animal Disease Diagnostic Lab

Using diagnostics to protect animals and people

The Louisiana Animal Disease Diagnostic Lab is a full-service AAVLD-accredited laboratory. Housed in the LSU School of Veterinary Medicine, LADDL services the people of Louisiana and surrounding states by providing animal disease diagnostic services to agricultural and general communities. LADDL enhances research development and adaptation of diagnostic tests and protocols, researches and investigates livestock and companion animal diseases impacting the health and wellbeing of the animals and citizens of Louisiana, and researches selective diseases impacting the economics on the animal industries of Louisiana. 

LADDL operates in partnership with Louisiana State University, the LSU School of Veterinary Medicine, Louisiana veterinarians, and livestock and poultry producers. LADDL also provides support for the teaching and research programs of LSU Vet Med. 

Contact Us

River Road, Room 1043

Baton Rouge, LA 70803

Administration: 225-578-9777

Sample Receiving and Accessions: 225-578-9778

After hours emergency: 859-806-4775



LADDL is located in Baton Rouge, Louisiana, on River Road adjacent to the LSU School of Veterinary Medicine.

The entrance is on River Road near Skip Bertman Drive.


Hours of Operation

Regular Hours of Operation

8:00 AM - 5:00 PM

Monday - Friday

Holiday Hours

LADDL will be closed on November 23-24 for the Thanksgiving holiday.

Weekend coverage

includes essential but limited services within the bacteriology laboratory.

Necropsy services

are available on Saturdays provided the animal arrives before 10:00 AM on Saturday.

Courier and Free Fed Ex Shipping In Louisiana

We offer free FedEx shipping in Louisiana and discounted shipping for out-of-state.

You will need to print the label from LADDL client portal address

Call 225-578-9777 if you have not already set your account on the portal.


Policies and Guidelines

Meet OurStaff

News & Updates

The Louisiana Animal Disease Diagnostic Laboratory (LADDL) is revising testing and service fees to cover the increased cost of reagents, supplies, investment in advanced technologies to better serve our clients, and laboratory instrument maintenance agreements, as well as  higher personnel costs, and software. The new fees were calculated based on the actual cost to perform the laboratory tests and services offered by LADDL. These fee revisions will take effect on July 06, 2022. To view the new fee schedules and additional information regarding changes to existing laboratory forms or processes, please use the following link: www.laddl.org.

Please be assured that LADDL will continue to provide the highest quality and outstanding diagnostic testing services to safeguard animal and public health in the State of Louisiana while making efficient use of our limited resources and funding. If you have any questions or concerns, please do not hesitate to contact me at 225-578-9775 or our business office at 225-578-9777.

Thank you for your continued partnership and support.


Udeni Balasuriya

Director and Professor of Virology