AHL User's Guide

Table of Contents

Map and contact information, AHL-Guelph Lab

Map and contact information, AHL-Kemptville Lab

Professional staff

General information - Vision and Mission statements for Laboratory Services Division

Services not offered at the Animal Health Laboratory

AHL client communications and the veterinarian-client-patient relationship

Disclosure of results, Demographics, Premises identification (PID)

TAT, Telephone and on-line result enquiries, Ownership of materials

AHL Standard Terms and Conditions

Client Services @ the Animal Health Laboratory

Zoonotic diseases, Federally reportable diseases

Ontario provincially notifiable hazards, immediately notifiable hazards

Antimicrobial residue information, Poison information centers, Adverse reactions

Ontario Animal Health Network (OAHN)

Disease investigations

The following species specific and syndromic submission guidelines are provided to guide practitioners when sampling field and clinic postmortem cases. Additional information on conducting field and clinic postmortems is provided in these AHL LabNotes:

LabNote 2 - Tips for practitioners for field postmortems and Labnote 34 - Field and clinic postmortems:  Simplified protocol and image listField and clinic postmortems.



Neurologic disease

Respiratory disease

Skin disease and neoplasia

Unexpected death

Fish, exotic, zoo, pocket pet, reptile, amphibian testing at the AHL


IHC (immunohistochemistry)

PCR, genotyping, sequencing by species offered by the AHL


Sample collection for suspected toxicology cases:

A. Tissue mineral panels

B. Serum/plasma/blood mineral panels

Clinical pathology section:

Hepatic disease

Renal disease


Equine Endocrine testing

Feline hyperthyroidism

Canine hypothyroidism

Guide to interpretation of AHL biochemistry profiles

Clinical Pathology reference intervals

Reference intervals for cavity fluids, Fluid Cytology, CSF

Biochemistry reference intervals

Hematology reference intervals

Serum progesterone in various species

Billing Information:

Available to clients that have logged into the website, to register for access to the AHL website billing section click here

Billing and fees, Case definition for billing purposes

Reporting, billing, invoicing

External Laboratories

Examples of approximate charges on AHL postmortem cases, Fee Schedule companion/food animal (pdf) using May 1 2023 fees