Yes. We provide Certificates of Analysis for most products to validate their composition, purity, and batch data. Copies are available upon request when placing your order or by contacting our support team directly.

Research peptides and compounds are carefully manufactured chemical or protein-based substances intended solely for scientific research. They support experimentation, analysis, and discovery in fields such as biotechnology, pharmacology, and molecular science.

We accept a range of major payment options, including debit and credit cards, bank transfers, as well as cryptocurrencies such as Bitcoin and Tether.

Yes. All products are sourced from reliable suppliers and undergo thorough batch analysis to confirm their integrity and uniformity. Quality assurance remains a core priority throughout our supply chain.

Orders are normally dispatched the next working day after payment is confirmed. During busy promotional periods, or where an order needs additional verification, dispatch may take longer. We will email you when your order ships.

We ship with Royal Mail wherever possible, using tracked services. The service available for your order is shown at checkout.

Delivery time depends on the service selected and your destination. Delivery dates cannot be guaranteed unless you choose a guaranteed shipping option. As a guide, please allow up to 5 working days from the dispatch date before treating a parcel as delayed.

You will receive a dispatch confirmation by email, including tracking information as soon as it is available from the courier. Please check your spam or junk folder if you cannot find it.

Use the tracking link or number in your dispatch email on the courier’s website. Tracking can take a little while to show its first update after the parcel is handed over, and updates may be less frequent for international parcels.

This is common and usually not a cause for concern, particularly in the first working days after dispatch. Parcels often move between courier hubs without a new scan. Please allow 5 working days from the dispatch date before contacting us. If tracking still shows no movement after that, email us and we will investigate with the courier.

Please allow 5 working days from the dispatch date before contacting us about a parcel that has not arrived. Working days are Monday to Friday, excluding UK bank holidays. For international orders, please also check the tracking page first, as customs checks can add time. If your parcel has not arrived once this period has passed, email us and we will take it from there.

To help us respond quickly, please include your order number, the email address used at checkout, your tracking number and a short description of the issue. For damaged items, please also attach clear photographs (see below).

We offer free UK shipping on qualifying orders. The qualifying amount is shown in your cart, and the free shipping message appears automatically once your order reaches it.

Yes, we ship worldwide from the UK. Delivery times vary by country. Some regions are currently experiencing transport disruption, and where that applies a notice is shown at the top of our website. Delays in those regions are outside our control.

For international orders, any customs duties, import taxes or local handling charges are the responsibility of the recipient. These vary by country and are not included in our prices. If a parcel is held by customs, please contact your local customs office or courier with your tracking number.

Please double-check your address at checkout. Once an order has been processed, changes may not be possible. For security reasons, we cannot alter shipping details without prior authorisation. If you notice an error, email us straight away, quoting your order number, and we will do our best to help if the order has not yet been dispatched.

We ship to the address entered at checkout, so incorrect or incomplete addresses are the customer’s responsibility. If the courier returns a parcel to us, we will contact you to arrange reshipment at your cost. Refunds are not available for parcels that could not be delivered because of an incorrect address.

Please check with neighbours, your building’s reception or post room, and any safe place the courier may have used, and ask others at your address. If you still cannot find the parcel, email us within 2 working days of the delivery date shown in tracking, and we will open an enquiry with the courier.

Delays are most often caused by courier disruption, seasonal or promotional peaks, customs checks, or regional transport disruption. Where an order needs additional verification before dispatch, this can also add time. We work with the courier to resolve delays, but we cannot control courier transit times.

If your parcel has not arrived after the delivery period above, contact us. We will open a courier investigation, and once the courier confirms the parcel is lost we will arrange a replacement or a refund, typically within 15 working days of confirmation.

No. We cannot issue a replacement or refund for a parcel that is still in transit. If a parcel is undelivered, it must first be returned to us, or declared lost by the courier, before a refund or replacement can be arranged.

Please email us within 2 working days of delivery with your order number and clear photographs of the outer packaging, the shipping label and the damaged item. Please keep all packaging until we have responded. We will review your claim and, where eligible, arrange a replacement or refund.

Refused or uncollected parcels are not eligible for a refund. If a parcel is returned to us because it was refused or not collected, reshipping costs will be charged to you.

It is an optional paid add-on that provides temperature-conscious packaging, enhanced handling and priority dispatch coordination for eligible research materials during dispatch and transit. You can add it in your cart before checkout. It does not guarantee delivery dates.

Add your chosen products to the cart and complete checkout on our website. You can also place an order by email using the Order by Email button at the top of the site. Orders placed through our official website or email address are the only way we sell. We do not take orders through social media or private messages.

Your order is confirmed once we have received full payment. You will then receive an order confirmation email. If you have not received one, please check your spam folder before contacting us.

All prices are shown in pounds sterling (GBP). If you pay from an account in another currency, your bank or payment provider may apply its own exchange rate and fees.

Only one discount code can be used per order, and codes cannot be combined with other promotions unless stated. Bundle products already include a built-in discount, so promotional codes may not apply to them. The terms of each offer are shown with the code.

In some cases, we carry out additional checks before dispatch to meet our compliance and fraud-prevention obligations. We will contact you by email if we need anything further. Responding promptly helps us dispatch your order sooner.

Our products are available only to customers aged 18 or over who are qualified professionals, or who are purchasing on behalf of a research organisation, for laboratory research use. We do not sell to individuals for personal use.

Orders can be cancelled before dispatch only, by emailing our support team with your order number as soon as possible. Once an order has been dispatched, it cannot be cancelled.

A refund or replacement is considered when a manufacturing defect is confirmed, when an item is damaged during delivery, or when the courier has officially declared a shipment lost. Our full Refund, Cancellation & Chargeback Policy sets out the details.

Refunds are not provided for change of mind, incorrect product selection, delivery delays, refused or uncollected parcels, opened or used products, or research results or third-party analysis.

Returns must be authorised by us before anything is sent back. Please email us first. Returned products must be sealed, unused and in their original packaging, and every return is inspected before a refund or replacement is approved.

Approved refunds are issued within 3–5 working days, although the time it takes to reach your account depends on your payment provider.

Yes, please. Most issues can be resolved quickly by email. Chargebacks raised without contacting us first may be formally challenged using transaction records and policy acceptance logs, and repeated abuse may lead to account restrictions.

Our Quality Centre page explains our testing and quality processes. Certificates of Analysis for most products are available on request when placing your order or by emailing us with your product name and batch details.

No. All NUPEP products are supplied exclusively for laboratory and in-vitro research. They are not approved for human or animal consumption, medical use or in-vivo experimentation, and any such use is strictly prohibited.

No. We do not provide guidance on product use, dosage or protocols, and information on our website must not be interpreted as medical advice or research instruction. Customers are expected to conduct their own independent research and follow their institution’s procedures.

Please follow any storage instructions on the product label, product page or Certificate of Analysis. As a general principle, research materials should be kept in a cool, dry place, protected from light and heat, and handled by trained personnel using appropriate laboratory practice.

Email us at info@nupep.co.uk with your order number and details of your enquiry. We aim to reply within 1–2 working days. Messages are answered in the order received, and sending a single email with full details helps us resolve your query faster than repeated messages.