NAD+ is a nucleotide-derived coenzyme, not a peptide. Identity, chromatography, water, assay and degradation controls should match NAD+ chemistry.
What procurement and laboratory teams should review
Use an NAD+-appropriate identity method
Review assay separately from purity
Control pH, moisture, temperature and solution hold time
Do not apply peptide MS assumptions automatically
Read the result in the context of its method
Analytical values become decision-useful only when the sample, batch, procedure, units, acceptance criterion and result belong together. A single headline percentage cannot answer identity, purity and content questions at the same time.
- Confirm the document is lot-linked, not a generic example.
- Distinguish qualitative identification from relative purity and quantitative assay.
- Check method scope, reporting units and any stated exclusions.
Questions to resolve before quotation or release
- Which method confirms NAD+ identity?
- Is the value purity or assay?
- What stability evidence is available?
Review NAD+ as a coenzyme rather than as a peptide.
Source material and further reading
This guide is informed by the following primary guidance and established technical resources. Always confirm the current version and its applicability to your material and jurisdiction.
HK PEPTIDES materials are supplied for laboratory research and documentation workflows only. They are not intended for human consumption, diagnostic use, therapeutic use, veterinary use or clinical application.