Precision Peptide Co High Purity NAD+ Cosmetic Peptide for Anti-Aging Research

That third-party testing covers HPLC analysis for purity and residual solvents, and we actually run a full COA on every single batch with teh actual numbers printed — not just 'pass/fail'.

So we keep reference samples form each batch for 12 months after production, just in case something needs rechecking later, and if you ever question a result our company can retest your vial at no charge.

Molecular weight at 663.43 is spot-on for NAD+, and impurity profile usually holds below 0.3% in our runs, which is tighter than the 0.5% spec on paper.

Storage is pretty straightforward at 2-8°C with the vial sealed under inert gas — we've seen it stay stable past 24 months when kept dry, but we don't guarantee beyond that.

Basically. Keep it out of light and moisture after opening.