Frequently Asked Questions | Research Peptides UK

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Common and Frequent Questions

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What are Peptides?

Peptides play a crucial role in fundamental physiological and biochemical functions of life. For decades now, peptide research is a continuously growing field of science. Peptide is a molecule formed by joining two or more amino acids. When the number of amino acids is less than about 50 these molecules are named peptides while larger sequences are referred to as proteins. The amino acids are coupled by a peptide bond, a special linkage in which the nitrogen atom of one amino acid binds to the carboxyl carbon atom of another. Peptides (proteins) are present in every living cell and possess a variety of biochemical activities. They appear as enzymes, hormones, antibiotics, receptors, etc. Synthetic peptides are useful in structure-function studies of polypeptides, in the preparation of cross-reacting antibodies, and in the design of novel enzymes for research purposes.

Can you help me decide which peptide to buy?

We do not provide in assistance in choosing your peptides. Please read some research articles online to help you choose.

Can you help me understand how to use peptides?

We can help our customers understand how to store and reconstitute peptides for research use. For all other enquiries we recommend consulting published research literature. We always recommend researching online to learn more about each peptide by searching the product name.

How do I store my peptides?

Peptide storage is important to ensure their quality is maintained at the highest level possible. We always suggest storing peptides in a fridge or freezer, but they are stable at room temperature for up to a month depending on sequence length etc. Below are our suggested storage guidelines: Mixed Peptides Storage Reconstituted (mixed) vials must be stored in the refrigerator (2 to 8 degrees Celsius) Expiry Use within 3-8 weeks of mixing. (Sequence dependent) Unmixed Peptides Storage: In powder (lyophilized) form vials can be stored frozen (0 to -20 degrees Celsius). Expiry Will remain stable up to 48 months (4 years) in the freezer. We recommend using within 18 months of purchase. Unmixed vials can be stored in the freezer for a period of up to 48 months (4 years); however, if you are going to use the vials within 1-3 months then you can store them in the refrigerator as repeated freeze-thaw cycles can cause damage to the peptide.

How do I mix my peptides?

We always suggest following a strict mixing procedure. Prior to adding any mixing solution make sure both peptide and solution are at room temperature. This will make sure your peptides are effectively mixed every time. Then gently add your mixing solution into the vial, making sure to drip the solution down the side of the vial to protect the peptide. Then give the vial a gentle swirl before storage for 24 hours in a refrigerator. At that point, the peptide is ready to use.

How can I pay for my order?

Bank transfer: Once the order is complete you will be given our bank details. Please then transfer the correct money. UK bank transfers are mostly instant but International transfers can take 1-3 working days to clear. Once the payment has cleared you will receive a confirmation email and you order will be shipped with our next deliveries. Bitcoin: Choose this option at checkout, you will then be emailed with our address to make the transfer to. This is done within working hours. Please allow up to 2 hours to process this. Credit/debit Cart: This option is available for limited countries. It is not an automated system and we need to email a secure link without work hours. Please allow up to 2 hours to process this payment link.

Do your products come with a Certificate of Analysis?

Yes. All PeptidesUK research peptides are HPLC-tested for purity. Certificates of Analysis are available on request — contact us with your order number and we will send the relevant documentation.

Do you offer bulk or wholesale pricing?

Yes. We offer wholesale pricing for research institutions, laboratories, and approved bulk buyers. Visit our wholesale page or contact us to discuss your requirements.

How long does delivery take?

Orders placed and paid before 2PM are dispatched the same day. Standard UK delivery typically arrives within 1–2 working days. Tracking information is sent once your order has been dispatched.

How do I confirm you have received my payment?

Order Status Information: Pending - Order received, awaiting confirmation of payment. Processing - Payment confirmed, order will be processed and dispatched with our next lot of shipments. This is processed without working hours. Shipped - Order shipped, tracking link in confirmation email.

How do I track my order?

Follow the link in the shipping confirmation email. Please contact us with any queries.

The appearance looks different to my other peptides

Due to manufacturing procedures, the appearance can look different from batch to batch. Please do not be concerned, this is completely normal. You can be assured of quality here at PeptidesUK. Please contact a member of staff for an detailed explanation.

What is your returns policy?

We want every order to arrive in perfect condition. If there is an issue — damaged goods, incorrect item, or a quality concern — please contact us within 7 days of receipt and we will resolve it promptly.

Please note that research peptides are biological materials classified as perishable goods. Under the Consumer Contracts Regulations 2013 (Regulation 28(1)(b)), perishable goods are exempt from the standard 14-day right of return. Once research materials have been dispatched, we are unable to accept returns for change of mind or any reason other than a fault or error on our part.

This does not affect your statutory rights in relation to faulty or misdescribed goods.

My Parcel hasn’t arrived?

Please contact us for tracking advice, we may need to escalate an investigation to find your order.

Do you ship to my country?

Please check with your countries import legalities before ordering. We cannot be liable for any instances of customs seizures due to legality differences.

Can't find the answer to your question?

Not able to find something over website? Don’t know where to look? Getting answers for your questions has never been so easy. Give users a chance to figure out things by themselves by reading the answers to before hand prepared questions by the seller in the form of FAQs

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Fast service...good discounts and communication though l am new to this site and it will take a while to find out how effective the peptides are.will update in a month or so.

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Very friendly team who always try to help. If products get stuck in customs, the seller or buyer cannot help it. This is due to the rules of each individual country. I was helped a lot, there were regular replies and excellent communication. For me an absolutely serious company. Thank you PEPTIDES UK!

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