The National Veterinary Laboratory Services at the United States Department of Agriculture performs a direct test for Clostridium botulinum toxin (mouse bioassay).

Please contact the laboratory by phone (902-566-0821) or email ( to discuss sample submission.



Test Days:M-W
Turn Around Time (Days):7-14 days

Serum (preferred)
Stomach/rumen contents from acutely affected animals
Feces from monogastric animals


Red-top vacutainer
Sterile, leak proof container
Double-bag all samples

Handling/ Storage:

Refrigerate and keep sample cold (do not freeze)
Ship sample on ice packs using overnight delivery

Test Fee:*You can only see pricing if you are logged in.
Go to the Submission Forms page.