How to verify NAD+ is authentic
Step-by-step guide to verifying your NAD+ is genuine: checking the COA, matching the batch number, and downloading from the product page.
Step 1: Locate the batch number
Every Peptify NAD+ vial has a batch (lot) number printed on the label. Note this number down — it should match the Certificate of Analysis published on the product page for that specific batch.
Step 2: Download the COA from the product page
The batch-specific COA for your NAD+ is downloadable directly from the product page on peptifyuk.com. This is the most reliable verification method because the document is hosted under our control, tied to the batch number, and includes the original HPLC chromatogram image plus mass spectrometry data.
If a supplier does not publish batch-specific COAs or only provides a generic purity claim, that is a significant red flag.
Step 3: Check the HPLC peak
On the COA, look at the HPLC chromatogram. A genuine NAD+ sample should show a single dominant peak at the expected retention time, with purity >99% (peak area). The mass spectrometry section should confirm the molecular weight matches the theoretical mass of NAD+.
Any chromatogram with multiple large peaks, or where the purity percentage looks inconsistent with the visible peak, should prompt you to contact the supplier for clarification.
Buy NAD+ for research
99%+ HPLC-verified NAD+ in stock. Every vial ships from the UK with a batch-specific Certificate of Analysis. Same-day dispatch on orders before 1pm.
Frequently asked questions
Why is NAD+ important in research?
NAD+ is essential for sirtuin activation, mitochondrial function, and DNA repair. Levels decline with age, making it a key focus of longevity research.
What is the purity of Peptify NAD+?
Peptify NAD+ is 99%+ HPLC-verified with a full Certificate of Analysis provided with every batch.
How should NAD+ be stored?
Store lyophilised NAD+ at -20C for long-term stability. Reconstituted NAD+ should be kept at 2-8C.