Question 1

Is it legal to buy research peptides in the UK?

Accepted Answer

Yes. Research peptides are legal to purchase in the United Kingdom for in-vitro laboratory research purposes. They are not controlled substances under the Misuse of Drugs Act 1971 or the Psychoactive Substances Act 2016. They are not licensed medicines under MHRA regulation and are not approved for human or veterinary use. All buyers must be 18 or over and must be purchasing for legitimate research purposes only.

Question 2

Who can place an order?

Accepted Answer

Orders are open to qualified researchers, laboratory professionals, and individuals purchasing for legitimate in-vitro research purposes. You must be 18 or older. We do not sell to anyone intending personal use or human consumption. We reserve the right to cancel any order where misuse is suspected.

Question 3

Do I need to provide proof of research credentials?

Accepted Answer

We do not routinely request credentials but reserve the right to do so. By placing an order you confirm that you are purchasing for legitimate research purposes. Any order where misuse is suspected will be cancelled and refunded.

Question 4

Can I order from outside the UK?

Accepted Answer

We currently dispatch to UK addresses only. We do not ship internationally at this time.

Question 5

What does ≥98% HPLC purity mean?

Accepted Answer

HPLC (High-Performance Liquid Chromatography) is the analytical method used to quantify the active peptide content of a sample. A purity of ≥98% means that at minimum 98% of the material in the vial is the declared compound. The remaining fraction may include water, counter-ions such as acetate or TFA, and trace synthesis residuals — this is standard for pharmaceutical-grade research peptides.

Question 6

Are your peptides independently tested?

Accepted Answer

Yes. Every batch is independently tested by Janoshik Analytical or Aspen Bioanalytics using HPLC-UV and mass spectrometry before dispatch. We do not use in-house testing as the sole quality verification. The signed Certificate of Analysis for every batch is linked directly from the relevant product page.

Question 7

What is a Certificate of Analysis (CoA)?

Accepted Answer

A Certificate of Analysis is a document issued by an independent laboratory confirming the identity and purity of a specific batch. It includes the HPLC purity result, mass spectrometry identity confirmation, batch number, and the testing laboratory's details. Every UK Peptides product ships with a batch-matched CoA accessible from the product page and sent with your order confirmation email.

Question 8

What purity should I expect?

Accepted Answer

Every batch dispatched by UK Peptides meets a minimum ≥98% HPLC purity specification. The exact result for your specific batch is shown on the Certificate of Analysis for that lot.

Question 9

Do your peptides contain TFA (trifluoroacetic acid)?

Accepted Answer

Trace TFA may be present as a counter-ion from the synthesis process — this is standard in SPPS (solid-phase peptide synthesis) and is present in most research-grade peptides at the trace level. TFA content is not separately quantified unless specifically requested.

Question 10

How should I store my peptides on arrival?

Accepted Answer

Transfer lyophilised peptide vials to a -20°C freezer immediately upon receipt. Protect from light and moisture. Allow vials to reach room temperature before opening to prevent condensation entering the vial. Bacteriostatic water should be stored at room temperature away from direct light.

Question 11

How do I reconstitute a peptide?

Accepted Answer

Draw the required volume of bacteriostatic water (0.9% benzyl alcohol) into a sterile syringe. Insert at an angle and slowly inject down the inside wall of the vial — do not inject directly onto the powder. Gently swirl until dissolved. Do not shake vigorously as this can damage the peptide structure. Once reconstituted, store at 2–8°C and use within the timeframe specified for that compound.

Question 12

How long do reconstituted peptides last?

Accepted Answer

Stability after reconstitution varies by compound. General guidelines: BPC-157: 4–6 weeks at 2–8°C. TB-500: 28 days at 2–8°C. Retatrutide: 28 days at 2–8°C. GHK-Cu: 5–7 days at 2–8°C (or up to 3 months if aliquoted and stored at -20°C). CJC-1295/Ipamorelin: 28 days at 2–8°C. Do not refreeze reconstituted peptides.

Question 13

How is the material stored before dispatch?

Accepted Answer

All peptides are stored at -20°C from goods-in through to packing. Orders are packed in insulated mailers with cold packs immediately before dispatch to maintain cold chain during Royal Mail transit.

Question 14

How quickly will my order arrive?

Accepted Answer

Orders placed before 3pm GMT Monday to Friday are dispatched the same working day via Royal Mail Tracked 24. Most UK mainland addresses receive delivery the next working day.

Question 15

Do you offer same-day dispatch?

Accepted Answer

Yes. Orders placed before 3pm GMT on working days dispatch the same day. Orders placed after 3pm or at weekends dispatch the next working day.

Question 16

How is my order packaged?

Accepted Answer

All orders are packed in insulated mailers in plain, unbranded outer packaging. There is no indication of the contents on the outside of the parcel.

Question 17

Do you ship internationally?

Accepted Answer

No. We currently dispatch to UK addresses only.

Question 18

How do I pay?

Accepted Answer

We accept payment by bank transfer. Secure Pay by Bank and manual bank transfer options are available at checkout.

Question 19

Can I cancel my order?

Accepted Answer

Orders can be cancelled before dispatch. Due to same-day dispatch, cancellation windows are very short. Contact us immediately via the contact page if you need to cancel. Once dispatched, the returns policy applies.

Question 20

Will I receive a receipt?

Accepted Answer

Yes. An order confirmation email is sent immediately after your order is placed, including your order number, itemised receipt, and the Reconstitution Reference Card PDF and links to the batch CoA for each product ordered.

Frequently asked questions

Ordering & Eligibility

Products & Purity

Storage & Handling

Dispatch & Delivery

Payments & Orders