Collection Guides

Samples that are properly collected and are stored and shipped at the appropriate temperature will yield the best results. Use our helpful resources for guidance on collection, storage and submission of your samples.

Anaerobic Culture Collection

Collection and storage tips for anaerobic culture samples.

Blood Culture Collection

Collection and submission tips for blood culture samples.

Bovine viral diarrhea virus (BVD) Guide

Sample collection, storage, and result interpretation guidelines for IHC and PCR testing.

Dermatophyte Submission Guide

Collection and submission tips for dermatophyte culture and PCR testing.

E. coli Interpretation Guide

Guidance on interpretation of Escherichia coli culture results.

Equine Infectious Anemia (EIA) Guidelines

USDA requirements for EIA form completion.

General Submission Guidelines

Guide to submitting the best samples for testing at the NDSU-VDL.

Johne’s Season Reminders

Helpful tips to ensure the fastest turnaround time for your samples as well as reminders of our testing policies for Johne’s PCR (Mycobacterium avium subsp. paratuberculosis).

Microbiology and Molecular Diagnostics Collection Guide

Collection and submission tips for collecting samples for cultures or PCR tests

Milk Culture Collection Guide

Collection and storage information for milk culture samples.

Nitrate Sampling for Nitrate in Feedstuffs

NDSU Extension Service bulletin, March 2015.

Rabies Submission Guide

Sample submission recommendations for the collection of brain tissue for rabies testing.

Select Agent Submission Guide

Sample submission guidance for anthrax, plague, and tularemia testing.

Serology Test Guide

Sample processing and submission information for serology tests.

Shipping Guide

General overview of sample shipment best practices with links to additional resources.

Surgical Margins Guide

Guidance for use of tissue dye to denote surgical margins.

Tritrichomonas Submission Guide

Sample collection, storage, and submission tips for bovine Tritrichomonas testing.

Water Collection Guide

Guidance for collection and submission of samples for water quality analysis and blue-green algae testing.

Additional resources

AAVLD Accreditation Certificate

Full accreditation, expires December 2023

Cyanobacteria (Blue-green Algae) Poisoning Bulletin

NDSU Extension Service bulletin, December 2015.

Ergot in Small Grains Bulletin

NDSU Extension Service bulletin, December 2018

Livestock water publication

Written by: Michelle Mostrom, DVM, MS, PhD, DABVT, DABT (1995-2020) & Steven Ensley, BS, DVM, MS, PhD

Livestock Water Quality Bulletin

NDSU Extension Service bulletin, July 2015.


The Microbiology section now has a dedicated page on the website for resources. Click the link for valuable resources and answers to frequently asked questions!

Nitrate Poisoning of Livestock Bulletin

NDSU Extension Service bulletin, March 2015.

Novel Pneumonia Syndrome Fact Sheet

Fact sheet about novel pneumonia syndrome (BALT hyperplasia) causing abortion and calf losses in North Dakota beef herds.