Welcome to our lab page

Important Announcements

Thanksgiving Day Closure

On Thursday, November 24 and Friday, November 25 we will be closed for Thanksgiving. We will return to normal business on Monday, November 28.


Due to unavoidable circumstances, we will not be taking “Rush Cases” from September 26, 2022 through November 2022. During this time, all diagnostic cases will be processed and billed as “Routine Cases”.

 If these circumstances change prior to November, we will update you and return to business as usual.

September 19, 2022

We are experiencing unusually high volumes of rush testing requests in this year's peak season.

While we are making every effort to complete our cases on time, we may experience delays in finalizing testing and answering emails and phone calls.

We greatly appreciate your understanding during this busy time.

September 12, 2022

We have an updated USDA Feed Import Form!

Click here for the new form.

We now have a mollusc sample submission form!

Click here for the new form.

We have an updated Sample Submission Form! Please use this moving forward.

Click here for the new form.

Testing Available for DIV1/SHIV!

(Decapod Iridescent Virus 1/Shrimp Hemocyte Iridescent Virus)

Please see our most updated sample submission form to order.

Lab group photo



Aquaculture Pathology Laboratory (APL) was formally established by former Professor and Director Dr. Donald Lightner in 1989. Upon his retirement, Dr. Arun K. Dhar joined the laboratory as Director and P.I. of Aquaculture Pathology Laboratory.

We are located in Southern Arizona in the middle of the Sonoran Desert!  Tucson, Arizona is surrounded by beautiful mountains and is located about 220 miles away from the oceanmaking our lab the ideal location for shrimp disease diagnostics and research.

We are currently a USDA approved, ISO 17025:2017 and 17043:2010 accredited (testing and proficiency testing), and OIE reference laboratoryAquaculture Pathology Laboratory, for the past 31 years, has been dedicated to providing quality diagnostic and research services for the growing shrimp industry worldwide.


Contact us:

Aquaculture Pathology Laboratory
The University of Arizona
College of Agriculture & Life Sciences
School of Animal & Comparative Biomedical Sciences
1117 E. Lowell Street
Bldg 90, Room 102
Tucson, AZ. 85721 USA

Main line: 520-621-4438

Lab E-mail: aquapath@cals.arizona.edu

Hours of Operation: Monday–Friday, 8 am–5 pm