This Funding Opportunity Announcement (FOA) encourages Small Business Innovation Research (SBIR) grant applications from small business concerns (SBCs) that propose to develop new non-animal-based assays to assess the potency of botulinum neurotoxin type A (BoNT/A) in a Good Manufacturing Practice (GMP) commercial environment. Successful projects should have as their goal the development of a test(s) and reagents that could be used for commercial release testing of BoNT/A products.