Research-use context: This article is provided for laboratory research and educational purposes only. It is not medical, therapeutic, diagnostic, veterinary, dosing or human-use guidance.
Start with identity
NAD+ is not a peptide, so its analytical programme should be matched to the material and specification rather than copied mechanically from a peptide COA template.
Separate analytical attributes
Identity, purity and quantity are different questions. The methods used should be appropriate to the claimed attribute, and results should be linked to the specific batch tested.
Build a defensible record
Researchers benefit from retaining the supplier lot, independent analytical documentation, test date and relevant storage history alongside experimental notes. This supports comparison across batches and studies.