Mercia Research
🇬🇧Manufactured in Britain
4.8 on Trustpilot

Research Peptides UK

High-purity liquid peptides in precision-filled research cartridges, batch-tested with COAs available.
For laboratory in vitro research use only.

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Mercia Research BPC-157 / TB-500 peptide pen and packaging on a navy background

≥99%

Purity verified

HPLC

Mass-spec confirmed

CoA

Every batch

UK

Manufactured in Britain

Tracked

Fast dispatch

Trusted by

0 customers

Popular peptides

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Our most-requested research compounds · For laboratory research use only

Same peptide. None of the prep.

A vial arrives as powder: reconstituted, measured and drawn by hand. The Mercia Pen arrives pre-filled and factory-sealed.

Stacks

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Save more when you buy multiple pens together

Researchers at Mercia Research working in the laboratory

Why Choose Us

Fast, tracked dispatch

  • In stock and out the door quickly
  • Temperature-protected packaging
  • Tracking from our door to yours
  • Ordered Mon–Thu ships same day; Fri–Sun ships Monday, to ensure correct shipping conditions

Proof in every order

  • We don't ship until we can prove what's inside
  • HPLC and mass-spec on every batch
  • ≥99% purity, LAL endotoxin tested
  • CoA matched to your exact lot

Made in Britain

  • Synthesised and tested in our own UK facility
  • Not repackaged from overseas
  • Every specification stated on the listing

Vials vs Pens

11 Steps. Or one.

A vial arrives as powder: you mix it, measure it, and draw every dose by hand. The Mercia Pen arrives ready.

Traditional Vial

Mercia Pen

11 steps

mixing, measuring, drawing

1 click

dial the dose, press

~12 minutes

plus a 5 minute wait mid-way

12 seconds

ready when you are

Hand-measured

syringe markings, eyeballed

Mechanical click

the same dose, every time

Opened repeatedly

every needle re-entry is a risk

Factory-sealed

never opened, never mixed

Syringes + water

plus wipes and a sharps bin

Nothing else

everything is in the pen

Mercia Research pre-filled multidose research pen

Reviews

What customers say

Really impressed with the service. Ordered in the afternoon and everything arrived the next day. The temperature controlled packaging was a nice touch and the CoA with matching batch number gave me confidence in the quality.

James Walker

Excellent experience from start to finish. Fast 24-hour delivery, securely packaged and everything arrived cold. Batch numbers matched the documentation and the certificate of analysis was included.

Sarah Mitchell

Very professional service. Communication was great, delivery was incredibly quick and the insulated packaging kept everything in perfect condition. Nice to see full CoA documentation included.

Daniel Harris

First order and definitely won't be my last. Arrived within 24 hours, well protected and temperature controlled.

Emily Carter

Couldn't fault the experience. Easy ordering process, next-day delivery and excellent packaging.

Michael Turner

One of the smoothest ordering experiences I've had. Fast dispatch, temperature controlled delivery and all the paperwork was included.

Rachel Evans

Reference

Peptide glossary

Definitions covering compounds, receptors, assay methods and lab abbreviations.

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Education

Knowledge Hub

Scientific resources covering peptide science, analytical testing, and laboratory handling.

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Support

FAQ

Answers to common questions about ordering, shipping, storage and research use.

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Research Peptides UK | HPLC-Tested, UK-Manufactured | Mercia Research