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NAD+ is a nucleotide coenzyme present in every cell, not a synthesised peptide. It sits in this index because it is sold alongside peptides, but almost nothing said about peptide testing applies to it unchanged.
NAD+ is a nucleotide coenzyme present in every cell, not a synthesised peptide. It sits in this index because it is sold alongside peptides, but almost nothing said about peptide testing applies to it unchanged.
Our records for this item are not all expressed as a purity percentage in the way a peptide assay is. The analysis answers a different question about a different kind of molecule, and forcing it into the same column would misrepresent both.
The compound is notably unstable in solution and sensitive to handling. For most items in this index the question is what was in the vial when it was tested; here the question of what remains after storage and transport is at least as important, and an assay performed at the laboratory cannot answer it.
Much of the published human work studies precursor compounds rather than direct administration, because the pathways and the delivery problems differ. Citations frequently blur the two, and a claim supported by precursor research is not support for this.
That the supplied material is what it claims to be at the point of testing. Given the stability question, that is a narrower guarantee than the same sentence would mean for a stable lyophilised peptide.
The published set we counted contains 12 report(s) naming NAD+, reported by measured mass rather than a purity percentage.
Purity and mass results say what was in the material tested. They carry no information about whether it does anything, and the two kinds of claim are routinely presented together in ways that let one borrow credibility from the other.
For compounds with a large consumer literature and a thin clinical one, laboratory documentation is often the only hard evidence available. It is real evidence about composition and it is silent on everything else.
The claims on this page about not a peptide at all, which changes what the laboratory can tell you about it can be checked against sources outside this site: