AHL LabNote 7-Transmissible spongiform encephalopathy (TSE) testing at the AHL

Updated by Davor Ojkic, DVM, PhD  Updated 2020

Below is the current testing available at AHL for TSE diseases. Note that all TSEs are reportable to CFIA. The AHL is part of the Canadian TSE Laboratory Network and is approved by CFIA for TSE testing as noted in the table below.

TSE disease

Species

Sample

Sample submission

Type of test

Fee

BSE (bovine spongiform encephalopathy) (mad cow disease)

Bovine (cattle)

Brain – obex

Fresh or frozen

ELISA

$57.00* - For CFIA, and for OMAFRA meat inspection submissions. Clinically suspect animals should be submitted directly to CFIA.

 

 

Brain – obex

Fixed in formalin

Histopathology, IHC

Not offered at AHL. Sent to CFIA

CWD (chronic wasting disease)

Elk, deer

1. Brain – obex

2. Medial retropharyngeal lymph nodes (RLN). See note below

Fresh or frozen

ELISA

$57.00* - For surveillance and herd certification. Clinically suspect animals should be submitted directly to CFIA.

Scrapie**

Sheep, goats

Blood, tissue

EDTA

Fresh tissue

PCR susceptibility genotyping for codons 136, 154, 171

$46.00   ISO/IEC 17025 accredited by SCC.

 

 

Brain – obex

Fresh or frozen

ELISA

$57.00*

Obex/RLNs removal and head disposal fee

All

Remove obex/RLNs from head for testing

Head

 

$35.00

Carcass disposal fee

All

Remove obex/RLNs from head for testing

Carcass

 

cow: $100.00

sheep/goat:$26.00

deer>100kg: $55.00

deer<100kg: $26.00

* Per sample price, applies to a minimum batch size of 10.  Please call the lab in advance of submitting small numbers of samples.

**AHL can do both screening/surveillance samples in addition to disease diagnosis suspects

Note: Both the obex and the retropharyngeal lymph nodes must be submitted for all farmed cervids tested for CWD. The primary target tissue tested for all members of the family Cervidae (with the exception of members of the genus Odocoileus), such as elk, reindeer, sika deer, red deer, and fallow deer, is the obex of the medulla. The primary target tissue tested for Odocoileus species (including white-tailed deer and mule deer) is the RPLNs. The additional submitted tissues will be frozen and held by the laboratory until the initial test is completed. Autolysed samples in which the primary target tissue cannot be identified are not suitable for testing.

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