Nicotinamide adenine dinucleotide (NAD+) is not a typical signalling peptide. It is a small-molecule cofactor. Cell biology labs measure it because it carries electrons in metabolism and is consumed by enzymes involved in DNA repair and protein deacetylation.
Why it appears in longevity research
Published work tracks NAD+ levels alongside mitochondrial function, sirtuin activity, and PARP consumption. Some papers report that NAD+ abundance changes with age in specific tissues. That is an observation from those models. It is not a dosing guide.
Quality checks that matter
For a research supply, the useful documents are identity, purity, and lot number. A certificate that does not match the vial in hand is not evidence. Store material as the COA and product page specify, and keep it for laboratory use only.
- Cofactor in redox metabolism, not a signalling peptide
- Studied in relation to sirtuins, PARPs, and mitochondrial assays
- COA should match the lot you received
- Research use only
This article is for educational and research purposes only. NAD+ sold by Kirei Clinic is not for human use.