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NMN + Resveratrol — Third-Party Lab Testing

Independent verification of identity, purity, potency and contaminants — batch by batch.

What "third-party tested" means

Third-party testing means an independent laboratory — one with no commercial stake in the result — analyses a finished batch of product and issues a Certificate of Analysis (CoA) reporting exactly what it found. It is different from a manufacturer testing its own product and simply asserting the result. Our NMN + Resveratrol is tested by a UK laboratory accredited to ISO/IEC 17025, the international standard for the competence of testing laboratories.

What every batch is tested for

Each production batch is screened across three areas — identity and purity, potency, and contaminants:

• Identity & purity. High-performance liquid chromatography (HPLC) confirms the material is genuine β-nicotinamide mononucleotide and verifies purity of ≥99%. Trans-resveratrol is confirmed at 98% purity.
• Potency. The lab measures the actual quantity of NMN and resveratrol per capsule and confirms it matches the amount stated on the label, so a serving delivers a clinically-studied dose rather than an assumed one.
• Heavy metals. Testing for lead, arsenic, cadmium and mercury against safe limits, because botanical and fermented raw materials can carry trace metals from soil and process water.
• Microbial contamination. Screening for total aerobic microbial count, yeast and mould, and specific pathogens such as E. coli, Salmonella and Staphylococcus aureus.

How to read the certificate

A CoA lists each parameter tested, the method used, the specification (the pass limit), the actual result measured, and a pass/fail conclusion. For purity you are looking for a result at or above the specification (for example, ≥99% for NMN). For contaminants you are looking for a result at or below the limit — often reported as "less than" the detection threshold, meaning none was found. The batch or lot number on the certificate should match the number printed on the base of your bottle.

Why it matters for NMN

NMN is a premium ingredient and the market has wide quality variation — independent surveys have found products that contain far less NMN than the label claims, or none at all. Because you cannot see purity or potency by looking at a capsule, an independent certificate is the only reliable way to confirm that what is on the label is what is in the bottle. That is why we test every batch rather than relying on a single one-off supplier certificate.

Manufacturing standards

Beyond batch testing, the product is manufactured in a GMP-certified facility using raw material verified at ≥99% purity by HPLC. For the full regulatory position on NMN in the UK and EU, see our NMN Regulatory Notice.

Questions

If you have a question about testing, a specific batch, or a certificate, email hello@humannutrients.com and we will send the relevant CoA. Human Nutrients sells NMN as a dietary supplement and does not make medicinal claims; always consult your GP before starting a new supplement.

This page is updated whenever a new batch certificate is issued. For our full editorial and medical review policy, see Editorial & Medical Review Policy.