Research Peptide Frequently Asked Questions
Everything researchers ask us before their first order. Can't find your answer? Contact us.
Quality & Testing
What purity are your peptides?
Every peptide we sell is independently verified to ≥99% purity by HPLC, with molecular identity confirmed by mass spectrometry. Batches that do not meet this standard are never released for sale.
Can I see a Certificate of Analysis before ordering?
Yes. Contact us with the product name and we will send the current batch COA during business hours — no account or purchase required. Every order also ships with its batch-specific COA in the box.
Who performs your analytical testing?
HPLC purity analysis and MS identity confirmation are performed by an independent analytical laboratory, separate from our synthesis and fulfilment operations.
Ordering & Delivery
How fast is UK delivery?
Orders placed before 4pm Monday–Friday are dispatched the same day. Standard tracked delivery takes 1–2 working days; next-working-day options are available at checkout. Delivery is free on orders over £25.
Do you ship internationally?
Yes, we ship to most European countries with tracked international delivery. Customers are responsible for ensuring import compliance in their jurisdiction.
Is packaging discreet?
Yes. All orders ship in plain, tamper-evident packaging with no external indication of contents.
Do you offer volume discounts?
Yes — applied automatically at checkout: 20% off orders over £150 and 30% off orders over £500. For wholesale and institutional pricing, contact our team.
What is your money-back guarantee?
Every order is covered by a 7-day money-back guarantee. If anything arrives damaged or incorrect, contact us within 7 days of receipt and we will replace it or refund you in full.
Do you price match?
Yes. Find the same compound and batch documentation standard cheaper from another UK supplier and we will match it — contact us before ordering.
Storage & Handling
How should I store lyophilised peptides?
Store lyophilised peptides at -20°C for long-term stability (24+ months). Protect light-sensitive compounds such as GHK-Cu, Semax and Melanotan II from light.
How long do peptides last after reconstitution?
Reconstituted peptides should be refrigerated at 2–8°C. Typical guidance is 14–28 days depending on the compound — see each product page for compound-specific storage guidance.
Legal & Compliance
Are your peptides for human use?
No. All Noxptide products are supplied strictly for in-vitro laboratory research purposes only. They are not medicines, supplements or cosmetics, and are not for human or veterinary use under any circumstances.
Who can purchase from Noxptide?
We supply customers purchasing for lawful laboratory research. By ordering, you confirm the products will be used solely for research in accordance with our Research Use Terms.