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. 


Louisiana Animal Disease Diagnostic Laboratory (LADDL) is working with veterinarians and the Louisiana Department of Health to test dogs and cats for COVID-19 through December 31, 2021. This collaborative effort is being funded by the CDC. Please click the link below for details. 

Click Here for Details


Submission policies for bacteriology specimens, clinical pathology, equine piroplasmosis, histopathology, molecular diagnostics, rabies testing, serology, toxicology, and tritrichomonas are available in the top navigation bar under Policies & Guidelines. Forms and fees are also available in the top navigation.


To access your reports and invoices,
please click the button below.
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New fees go into effect July 1, 2021.

Learn more about our Free Courier Service in the Baton Rouge and New Orleans areas.

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



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 225-892-6461 


Directions to LADDL

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