Which item is NOT required when submitting a protocol?

• A. Species used
• B. Number of animals
• C. Description of procedures
• D. Funding source

Answer: (D)

When submitting a protocol for animal research, the reviewers focus on animal welfare and the scientific design. They need to know which species will be used, how many animals will be used, and a clear description of the procedures to be performed. The species identifies the specific welfare considerations, housing needs, and regulatory requirements. The number of animals is crucial to ensure the study uses an appropriate, justified sample size and to uphold the principle of reduction. A detailed description of procedures allows assessment of potential pain and distress, the use of anesthesia or analgesia, and the planned humane endpoints, so steps are in place to minimize suffering.

Funding source, while important for budgeting and grant administration, does not affect the welfare or ethical review of the procedures themselves, so it is not a required element for protocol submission. It may appear in separate administrative processes, but it does not drive the IACUC review of animal care and use.