Yes — research peptides are legal to purchase in the United Kingdom when sold strictly for laboratory research use. Every product on ThePeptideCode is labelled “research use only” and is not for human or veterinary consumption.

Orders placed before 2 pm UK time are dispatched the same working day. UK Express tracked delivery typically arrives within 1–2 working days. Standard delivery is free on orders over £100.

UK Express is £6.99 (tracked, 1–2 days). Standard delivery is free on orders over £100. We also ship to the EU (£14.99) and 13 international destinations (£23.99).

Yes. We ship to all 26 listed EU countries at a flat £14.99 rate. Delivery typically arrives within 3–7 working days depending on the destination and customs processing.

Yes. All orders ship in plain, unbranded outer packaging with no peptide-related labelling visible on the exterior.

Yes. Every UK Express and EU order ships with a tracking number, sent to your email once the package leaves our facility.

Every batch is tested by an ISO 17025-accredited independent laboratory using HPLC (purity), mass spectrometry (identity), and where applicable Karl Fischer titration (water content) and LAL testing (endotoxin). A unique batch ID lets you look up the certificate on our verification page.

Our typical purity threshold is ≥99%. Several recent batches have measured at 99.32%–99.69%. We publish individual batch certificates so you can see the exact figure for the vial you received.

Yes. Sample batch certificates for Retatrutide and KLOW80 are public on our verification pages. Once you place an order we email the certificate for your specific batch ID.

Peptides are delivered as a lyophilised (freeze-dried) powder in a sealed glass vial. You reconstitute them with bacteriostatic water before research use.

Slowly inject the calculated volume of bacteriostatic water down the inside of the vial wall — do not squirt directly onto the powder. Swirl gently until fully dissolved. See our full reconstitution guide for sterile technique and dosage maths.

It depends on the peptide strength and your desired concentration. As a rule of thumb, 2 ml of bacteriostatic water added to a 10 mg vial gives 5 mg/ml; 1 ml gives 10 mg/ml. The full table is on our reconstitution page.

Most reconstituted peptides remain stable in the fridge at 2–8 °C for 30–60 days, depending on the compound. For longer storage, single-use aliquots can be frozen at −20 °C. See storage guide for per-compound timings.

Yes — most peptides tolerate one freeze cycle when stored at −20 °C in single-use aliquots. Avoid repeated freeze-thaw cycles; each cycle accelerates degradation.

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol, which inhibits bacterial growth. It is the standard solvent for reconstituting multi-use research peptide vials.

No. Every product on ThePeptideCode is for laboratory research use only. They are not approved for human or veterinary consumption, diagnostic, or therapeutic application.

Yes. Our terms of service require a minimum age of 21 to place an order. The site presents an age-verification gate on first visit.

EU buyers are responsible for compliance with their local research-import rules. Customs may hold packages for clearance. We provide tracking and a CoA to help with documentation.

No. Once a vial is opened, the contents cannot be returned. We offer full refunds for items damaged on arrival or shipped incorrectly, reported within 14 days.

Email support@thepeptidecode.co.uk with photos of the damage within 14 days. We will arrange a replacement or full refund.

Approved refunds are processed back to the original payment method within 5–10 working days.

We accept Visa, Mastercard, Maestro, Apple Pay, Google Pay, Klarna, Clearpay, and UK direct bank transfer (BACS). All card payments go through PCI-DSS-compliant processors.

Card declines are usually triggered by your bank’s fraud rules or 3-D Secure step-up. Try a different card, or pay by bank transfer (BACS). See our payment help page.

The merchant descriptor on your statement reads “ThePeptideCode LTD” or a shortened variant. If you do not recognise a charge, contact us before disputing.

Email support@thepeptidecode.co.uk or call +44 7547 405222 during UK business hours. We respond within 24 hours on working days.

Yes — guest checkout is available. Creating an account lets you re-order quickly and view past invoices and batch certificates.