Tesamorelin peptide vial, 10mg / 5ml research-grade lyophilised powder, made and tested in the UK

Tesamorelin Peptide

1 × 10mg / 5ml · 10mg total
£130.00
£130.00
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Tesamorelin peptide vial, 10mg / 5ml research-grade lyophilised powder, made and tested in the UK
  • Tesamorelin peptide vial, 10mg / 5ml research-grade lyophilised powder, made and tested in the UK
  • Tesamorelin peptide vial, 10mg / 5ml research-grade lyophilised powder, made and tested in the UK
Tesamorelin Peptide

UK lab · Latest batch: 12 Mar 2026

Tesamorelin Peptide

10mg / 5ml per vial

Tesamorelin is a lab-modified copy of a natural growth-hormone signal (GHRH). A small chemical tag makes it much more stable than the natural version. It's studied in the lab for growth-hormone signalling and for its effects on visceral fat, the fat stored deep around the organs. Supplied as a research-grade compound.
  • Stable, long-lasting GHRH copy
  • Every batch tested to ≥99% purity
  • Made and shipped from the UK
  • Lab certificate with every batch
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£130.00
£130.00
Same-day dispatch before 3pm
Certificate of Analysis: batch TSM-2419 99.41% purity by RP-HPLC / MS · independently verified · 12 Mar 2026 Certificate available on request
  • Same-day dispatch before 3pm
  • Secure checkout
  • Discreet, unbranded packaging

Why researchers choose BPC157

  • UK based
  • 99% purity
  • 3rd-party tested
  • CoA every batch

Peptide purity

Batch TSM-2419 · RP-HPLC / MS

99.41%Tesamorelin

UK Based

Made, tested and shipped from Alderley Park, Cheshire.

99% Purity

We only release peptides at 99% purity or higher, measured by HPLC.

3rd-Party Tested

Independently checked by an accredited UK lab.

CoA Every Batch

Downloadable Certificate of Analysis for the exact batch you receive.

Often stacked with

Add compounds that pair well to the same order: one click, no extra shipping.

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CJC-1295 peptide vial, 5mg / 3ml research-grade lyophilised powder, made and tested in the UK

CJC-1295 Peptide

5mg / 3ml

Latest batch: 12 Mar 2026

£90.00

Bacteriostatic mixing water, 10ml multi-use vial with 0.9% benzyl alcohol, for reconstituting research peptides

Bacteriostatic Mixing Water

10ml

£5.99

MOTS-c peptide vial, 10mg / 5ml research-grade lyophilised powder, made and tested in the UK

MOTS-c Peptide

10mg / 5ml

Latest batch: 12 Mar 2026

£110.00

Buy as a stack and save 15% Metabolic Stack: MOTS-c + Tesamorelin £209.09 instead of £245.99 · save £36.90 View the stack

Scientific profile

Tesamorelin at a glance

A small chemical tag added to Tesamorelin protects it from an enzyme (DPP-4) that would otherwise break it down quickly, while still letting it fit the GHRH receptor. When it binds that receptor on pituitary cells, it sets off internal signals that lead the cell to make and release growth hormone.

Primary research areas

  • GHRH receptor studies
  • Visceral fat models
  • IGF-1 signalling
  • Fat-breakdown (lipolysis) tests
Sequence
trans-3-hexenoyl-GHRH(1–44)-NH2
Molecular formula
C221H366N72O67S
Molecular weight
5135.9 g/mol
CAS number
218949-48-5
Purity
≥99% (RP-HPLC)
Physical form
Lyophilised white powder
Solubility
Water soluble; reconstitute gently to avoid aggregation
Half-life
Extended relative to native GHRH
Storage
Lyophilised: 2–8°C, protected from light. Reconstituted: 2–8°C, use within 30 days.
01

What is Tesamorelin?

Tesamorelin is the full natural growth-hormone-releasing factor sequence (44 amino acids) with a small chemical tag added at one end. That single change dramatically slows how quickly the body breaks it down, which is why it's the go-to reference compound for researchers studying stable, long-lasting GHRH versions.

At around 5.1 kDa it's by far the largest peptide in this range, so it needs a little extra care when mixing.

02

What researchers study Tesamorelin for

In hormone research, Tesamorelin is used to study the GHRH receptor and the related IGF-1 signalling with a longer, steadier window than the natural hormone allows. Pituitary cells and animal models are the usual test systems.

A separate area of study is visceral fat, the fat stored deep around the organs. Because growth-hormone signalling affects how this particular fat is broken down, Tesamorelin has been widely studied in fat-cell and whole-animal models looking at fat loss in this specific area and the related metabolic markers.

03

How to store and prepare Tesamorelin

Large peptides clump easily. Add bacteriostatic water very slowly down the inside wall of the vial and let it sit for two to three minutes before a gentle swirl. Never vortex or shake.

The mixed solution should be completely clear. Keep it in the fridge (2–8°C), away from light, and use within 30 days. Throw it away if you see any cloudiness, threads or floating bits.

Mechanism at a glance

A small chemical tag added to Tesamorelin protects it from an enzyme (DPP-4) that would otherwise break it down quickly, while still letting it fit the GHRH receptor. When it binds that receptor on pituitary cells, it sets off internal signals that lead the cell to make and release growth hormone.

Live batch record

The exact batch we're shipping today

Every Tesamorelin vial leaving Alderley Park carries a batch number, a test date and a published certificate. Nothing ships before an independent laboratory has signed the result off.

Batch number
TSM-2419
Date tested
12 Mar 2026
HPLC purity
99.41%
Test method
RP-HPLC / MS
Testing laboratory
Accredited UK lab (ISO/IEC 17025)
Retest due
11 Mar 2028
Measured purity, batch TSM-2419 99.41%

We only release batches at 99.00% purity or higher, measured by HPLC.

Certificate on request for batch TSM-2419

Batch journey

  1. Made 19 Feb 2026 Made in the UK
  2. Independently tested 12 Mar 2026 Accredited UK laboratory
  3. Quality-checked 15 Mar 2026 Released at 99.41%
  4. Shipping now Current stock This is the vial you receive

Previous batches, still published

  • TSM-2388 tested 04 Feb 2026 99.28%On request
  • TSM-2351 tested 19 Dec 2025 99.16%On request

Delivery & handling

Getting your Tesamorelin

  1. 01

    Order before 3pm

    Place your order online. Orders before 3pm on a working day are picked and packed the same day.

  2. 02

    Dispatched from the UK

    Your vials are pulled from a batch with a published CoA and sealed in plain, unbranded outer packaging.

  3. 03

    Tracked UK delivery

    Dispatched on a tracked 24-hour Royal Mail service. Free on orders over £100, with tracking.

  4. 04

    Store and research

    Store lyophilised powder at −20°C, tightly sealed, dry and protected from light; after reconstitution, store at 2–8°C for short-term use

Certificates of analysis

Every batch tested. Every result published.

Samples from each Tesamorelin batch are sent to an independent, accredited UK laboratory. Purity is measured with a technique called HPLC, and identity is confirmed by mass spectrometry, before the batch is released.

Batch Tested Purity Method
TSM-2419 12 Mar 2026 99.41% RP-HPLC / MS On request
TSM-2388 4 Feb 2026 99.28% RP-HPLC / MS On request
TSM-2351 19 Dec 2025 99.16% RP-HPLC / MS On request

Why researchers choose us

Tested, documented, repeatable

Every batch tested

No vial is released until an independent laboratory confirms the batch meets our 99% purity standard.

Research first

Everything is made, filled and documented for laboratory research, with the specs and paperwork coming before any marketing.

UK made, shipped worldwide

Made and filled at Alderley Park, the UK's largest life sciences campus, and shipped with tracking.

Consistent between batches

Every release is held to the same specification, so a repeat order behaves like the last one.

Answers

Tesamorelin questions, answered

Can't find what you need? Our UK team answers technical enquiries within one working day.

Is Tesamorelin third-party tested?

Yes. Every batch of Tesamorelin is checked by an independent UK laboratory that's accredited to the ISO/IEC 17025 standard. They confirm its purity (using a technique called HPLC) and its identity (using mass spectrometry). The certificate for the exact batch you receive is published on this page before we put it on sale.

Where is it made and shipped from?

Everything (making the peptide, filling the vials and quality-checking each batch) happens in the UK at our facility on Alderley Park, the country's largest life-sciences campus. Your order is picked, packed and posted from the same site, so nothing crosses a border before it reaches you.

How quickly will my order arrive?

Orders placed before 3pm, Monday to Friday, are sent out the same working day on a tracked 24-hour UK service. Delivery is free on orders over £100. Everything ships in plain, unbranded packaging.

What does 99% purity actually mean?

It means at least 99% of what's in the vial is the peptide itself, with almost no leftover by-products. We measure this with a lab technique called HPLC, and only release batches that reach 99% or higher. The exact figure for your batch is printed on its certificate.

How does Tesamorelin come packaged?

Tesamorelin arrives as a freeze-dried powder in a sealed glass vial, with a flip-off cap and a tamper-evident seal so you know it hasn't been opened. You'll need bacteriostatic water to mix it (sold separately).

Can I save money by buying more than one vial?

Yes. Two vials save you 10% and three vials save 20% against the single-vial price.

Do I get a Certificate of Analysis with every order?

Yes. A certificate comes with every batch and can be downloaded from this page. It shows the batch number, the date it was made, the purity result, confirmation of identity, appearance, water content and a contamination (endotoxin) check.

Is this product for human use?

No. Everything we sell is supplied strictly as a research-grade compound for laboratory study by qualified researchers. These products are not medicines and are not intended for human or animal consumption, injection, diagnosis or treatment.

Research use only. Tesamorelin Peptide is supplied strictly as a research-grade compound for laboratory study by qualified researchers. It is not a medicine and is not intended for human or animal consumption, injection, diagnosis, treatment or prevention of disease.