The laboratory will be closed Monday, May 27 in observance of Memorial Day.


Mystery Photo- Spring 2024

From the Spring 2024 Newsletter! An 8-year-old, male neutered domestic shorthaired cat with a history of hypercalcemia, constipation, chronic renal insufficiency, congenital heart murmur, congenital… More

Update: HPAI in Cattle

Highly pathogenic avian influenza (HPAI) was recently detected in cattle. Visit the USDA website for more information:  The NDSU VDL is approved to perform… More

Mystery Photo- Winter 2024

From the Winter 2024 Newsletter! An 8-year-old neutered male mixed-breed dog. Presented to emergency services deceased. What is the underlying cause? Click here for the… More

Mystery Photo- Fall 2023

From the Fall 2023 Newsletter: An adult cat died under anesthesia. What is the underlying cause? Click here for the answer!  More

Mystery Photo Summer 2023

From the Summer 2023 Newsletter: The liver of an aborted lamb contains multiple white circular foci along the surface extending into the parenchyma on section.… More

Milk Testing

The NDSU-VDL does not perform testing on animal products intended for human consumption. This applies to all test methods performed at the laboratory. Submissions with… More

Mystery Photo- Winter 2023 Newsletter

Thirty-five recently purchased feeder piglets show signs of ill-thrift and diarrhea. One 4-month-old female piglet is submitted for general investigation. There is thickened and necrotic… More

Anaerobic Culture Tips

Common anaerobic pathogens include Actinomyces sp., Clostridium perfringens, Fusobacterium necrophorum and Bacteroides fragilis. Oftentimes, ordering an anaerobic culture can be overlooked. Situations where an anaerobic… More

Mystery Photo- Fall 2022

This image is from the coelomic cavity of an adult layer chicken. What is your diagnosis? What other condition(s) may cause multifocal lesions in the… More

NOTICE: Fee increase July 1

Due to rising cost of materials and reagents, prices on some tests will increase July 1, 2022. For over five years, the NDSU VDL has… More

Referral Test Pricing Changes

As of June 1, 2022, cases submitted to the NDSU-VDL for ONLY referral test requests (no in-house tests requested), pricing will be as follows: Accessioning… More

New Jersey cat tests tularemia positive

Samples from a New Jersey cat tested positive for Francisella tularensis (tularemia) by polymerase chain reaction (PCR) on Wednesday, September 29. The indoor/outdoor cat presented… More

Anthrax identified in ND- 2nd case of 2021

Samples from cattle in central North Dakota tested positive for Bacillus anthracis (Anthrax) by polymerase chain reaction (PCR) at the North Dakota State University Veterinary Diagnostic… More

2020 Bovine Respiratory Antibiograms

 Antibiograms are cumulative antimicrobial susceptibility test (AST) reports of bacterial isolates used to show current resistance and to compare resistance trends over time. They are useful… More

Johne’s submission examples

Samples MUST be labeled with the sample number (1, 2, 3, etc.) that corresponds with the identification form. To avoid processing delays, samples must be… More

Livestock Water Publication

Drinking water quality for livestock is essential for animal health and production. Read the Livestock Water Publication now available on the VDL Resources page! Publication… More

Equine Respiratory Panel

When screening for causes of mucopurulent discharge in horses, both bacterial and viral pathogens should be considered. The NDSU-VDL now offers a test panel at… More

Changes to Mycotoxin testing

The Mycotoxin screen previously offered by the NDSU-VDL has been expanded to include Fumonisin B3, DAS, 15-ADON, and 3-ADON. The price of this screen has… More

Blue-green algae

With continued drought conditions in the region and rising temperatures, we would like to share a reminder to monitor water sources for the presence of… More

Bovine diarrhea panel

We now offer the bovine diarrhea PCR panel, which includes targets for bovine coronavirus, rotavirus, and Cryptosporidium parvum. The bovine diarrhea panel is available for animals… More

Abortion sample submission tips

Samples to include for optimal results: Fresh and formalin-fixed placenta Whole fetus/neonate (recommended) or fresh and fixed tissues, including: Fresh brain, heart, lung, liver, kidney,… More

Happy holidays from the VDL!

The laboratory will be closed on the following dates: Thursday, December 24th at noon Friday December 25th- all day Friday, January 1st- all day  … More

Updates to clinical pathology panels

Chemistry, electrolyte and complete blood count offerings and test prices have changed! Please visit our test pages to review pricing and analytes offered. Complete blood… More

Supplementation for Beef Cattle

From the December 2020 NDSU-VDL newsletter, a guest column by Karl Hoppe, Extension Livestock Systems Specialist, NDSU Carrington Research Extension Center: Recently, I was visiting… More

Cold Weather Reminders

With cold weather in the area, it is important to consider effects of freezing on samples sent to the laboratory for testing. Certain samples may… More


From the Summer 2020 Newsletter: The case for this issue is from an adult cat that mysteriously died at home. The owner performed the autopsy… More

2019 Companion Animal Antibiograms

Antibiograms are cumulative antimicrobial susceptibility test (AST) reports of select bacterial isolates intended to show resistance trends over time. They are useful in monitoring antimicrobial… More

Case study: Tyzzer’s disease

From the June 2020 Newsletter: The other case of neonatal disease is from a 10-day-old female Quarterhorse foal that became recumbent and died after being… More

Senator Bill Bowman

Former North Dakota state senator, Bill Bowman, passed away on Saturday, August 15. Senator Bowman was a major advocate of agriculture in the state of… More

Water pH values for Livestock

This year the North Dakota Veterinary Diagnostic Laboratory (NDSU-VDL) has detected elevated pH values in livestock surface waters, especially in western North Dakota. Generally, the… More

Survey- New immunoassay offerings

The NDSU-VDL is looking to offer new immunoassays for our clients! The test results for these immunoassays would be available same-day for samples received during… More

Coronavirus FAQ

Looking for reliable coronavirus information and safety tips for your pets? Look no further! The U.S. Department of Agriculture (USDA) and Centers for Disease Control… More

Coronavirus updates

Dear Laboratory clients, Due to the increasing risk associated with the ongoing pandemic, the VDL will be closing its lobby to the public and discontinuing… More

Rabies testing

Rabies testing is performed by fluorescent antibody (FA) testing. This test also includes histopathology review by a veterinary pathologist. Please see our test page and… More

Lab Week 2020: April 19-25

Did you know that 60-70% of clinical decisions are made based on laboratory results? Laboratory results help clinicians choose the right treatments at the right… More

VDL to Remain Open

Although the ongoing coronavirus pandemic has the potential to impact testing services offered by the laboratory, the recent changes in the university’s schedule do not… More


From the February 2020 Newsletter: Mycotoxins are detected frequently in feed submitted to the toxicology lab. The 2019 Dakota weather often was challenging: either too… More

February 2020 Newsletter

The first newsletter of 2020 is now available. Click here to read the newest edition of the newsletter or visit our newsletter page for past… More

2019 Bovine Abortions

During 2019, the NDSU-VDL received 112 bovine abortion cases, which included whole fetuses submitted for necropsy and general investigation and tissue samples submitted for general… More

Johne’s Season Reminders

Johne's (Mycobacterium avium subsp. paratuberculosis) testing season is upon us, which means it is a good time to share helpful tips to ensure the fastest… More

Serology Test Guide

Proper sample collection and handling practices help to ensure the most accurate test results. View our new Serology Test Guide for information about best practices… More

Rabies Submission Guide

A guide for submission of rabies samples is now available. Sometimes it can be difficult to know which samples would be best for a particular… More

World Rabies Day

September 28 is World Rabies Day. It was started in 2007 to raise awareness of rabies and its continued impact around the world. The incidence… More

Swab sampling tips

When choosing a sample to submit for testing, it is important to remember that tissues, fluids, aspirates or fecal material are always preferable to swabs.… More

Ergot Infected Pasture Grasses

Ergot infected pasture grasses (brome, timothy, wheat, quack grasses) are a problem this year. Ergotty forage grasses are particularly visible along fence lines, in wet… More

Effective June 1, 2019

Requests to correct animal and/or owner information after release of results, requiring us to amend/correct previously distributed reports will result in a $10 form correction… More