The Louisiana Animal Disease Diagnostic Laboratory (LADDL) is a full-service AAVLD-accredited laboratory. 

Housed in the Louisiana State University's School of Veterinary Medicine, the LADDL services the people of Louisiana and surrounding states by providing animal disease diagnostic services to agricultural and general communities in the state of Louisiana. 

We conduct necessary research for the continued enhancement of the following outreach services: research development and adaptation of diagnostic tests and protocols, research and investigation of livestock

and companion animal diseases impacting the health and well being of the animals and citizens of Louisiana, and research on selective diseases impacting the economics on the animal industries of Louisiana.

The LADDL operates in partnership with Louisiana State University, LSU School of Veterinary Medicine, Louisiana veterinarians, and livestock and poultry producers. We also provide support for the teaching and research programs of the LSU SVM. 


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The Louisiana Animal Disease Diagnostic Laboratory (LADDL), committed to providing the highest quality diagnostic services, is in the process of revising laboratory testing fees to adjust for the rising costs of laboratory supplies and investments in advanced technologies. Fee revisions are scheduled to take effect on April 06, 2020. We value you as a client and hope you feel our services are a great value. If you have questions or concerns, please give us a call.

Learn more about our Free Courier Service in the Baton Rouge area.

We now offer GlobalVetLINK for electronic submission and certificates for EIA (Coggins) testing.  They offer a 60 day free trial: see


Louisiana Animal Disease Diagnostic Laboratory

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 or


Entrance on River Road behind the LSU School of Veterinary Medicine



ASAP Courier Service

LADDL will offer a new free courier service starting November 1, 2018 for our clients. We have contracted with ASAP Courier Service to pick up clinical and biopsy specimens in the Baton Rouge area. This courier service is offered without any cost to our clients, and we encourage you to take advantage of this free service offered by LADDL. This service is offered Monday through Friday.

Details about Courier Service

Federal ExpressWe now have free FedEx shipping in Louisiana and discounted shipping for out-of-state. You will need to print the label from our web portal. Call 225-578-9777 if you have not already set your account on the LADDL Client Portal