National Select Agent Registry phone numbers for APHIS (301-851-3300) and CDC (404-718-2000).
Last Updated: Friday, October 05, 2012

Permissible Toxin Amounts

The following toxins are not regulated if the amount under the control of a principal investigator, treating physician or veterinarian, or commercial manufacturer or distributor does not exceed, at any time, the amounts indicated in the table below.

HHS Toxins [§73.3(d)(3)] Amount
Abrin 100 mg
Botulinum neurotoxins 0.5 mg
Short, paralytic alpha conotoxins 100 mg
Diacetoxyscirpenol (DAS) 1000 mg
Ricin 100 mg
Saxitoxin 100 mg
Staphylococcal Enterotoxins (Subtypes A, B, C, D, and E) 5 mg
T-2 toxin 1000 mg
Tetrodotoxin 100 mg

Change Text Size:
A A A