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FREE EU shipping over €100 · Same-day dispatch · COA on request
Growth & Hormones

Tesamorelin 2mg

In stock
39,99 
HPLC Purity 99%+
Tested by Janoshik Analytical
Certificate On request

Every batch independently tested — HPLC purity, Mass Spec identity, endotoxin & heavy-metal screening.

99%+ purity — verified by HPLC, COA on request
Free shipping on EU orders over €100
Same-day dispatch on orders before 16:00 CET
Research use only. Not for human consumption, veterinary, or clinical use.

Tesamorelin is a synthetic analogue of human growth-hormone-releasing hormone (GHRH 1-44), stabilised by an N-terminal trans-3-hexenoyl modification that increases resistance to enzymatic degradation. It is studied as a growth-hormone secretagogue acting through the pituitary GHRH receptor.

Binding to the GHRH receptor activates the cAMP/PKA pathway in somatotroph cells, stimulating synthesis and pulsatile release of endogenous growth hormone and, downstream, IGF-1. Unlike recombinant GH, Tesamorelin preserves the physiological feedback and pulsatility of the GH axis. Research has focused on visceral adipose tissue reduction and lipid metabolism.

Supplied as a lyophilised powder strictly for laboratory research use.

SKU ONX-TESA-2
Purity 99%+
Molecular weight 5135.9 Da
Molecular formula C221H366N72O67S
CAS number 218949-48-5
Amino-acid sequence trans-3-hexenoyl-YADAIFTNSYRKVLGQLSARKLLQDIMSRQQGESNQERGARARL-NH2
Amino-acid count 44
Appearance White to off-white lyophilised powder
Solubility Reconstitutes in bacteriostatic water
Storage Store at 2–8 °C, protected from light
Shelf life 36 months at 2–8 °C

Related research notes

References are provided for scientific background only. They describe preclinical and laboratory research and do not constitute medical, therapeutic, or efficacy claims. This product is sold strictly for research use.

What is Tesamorelin?

Tesamorelin is a synthetic analogue of human growth-hormone-releasing hormone (GHRH 1-44), stabilised by an N-terminal trans-3-hexenoyl modification that increases resistance to enzymatic degradation. It is studied as a growth-hormone secretagogue acting through the pituitary GHRH receptor.

Where can a laboratory buy Tesamorelin in the EU?

Onyx Peptides supplies Tesamorelin for laboratory research across the European Union. We are operated by Vexio j. s. a. (IČO 54214530) in Slovakia and dispatch from within the EU, so there is no customs entry, no import duty and no border hold. Orders placed before 16:00 CET ship the same day, and shipping is free above €100.

How do I verify the batch of Tesamorelin I receive?

Each vial carries a batch number. Ask us for the Certificate of Analysis of the batch currently in stock — before you order, not after — and check that the batch number on the certificate matches the one printed on the vial. The analysis is performed by Janoshik Analytical, an independent laboratory in Prague, which will confirm a report it issued if you contact them with its identifier.

How is purity verified?

Every batch is independently tested by Janoshik Analytical using HPLC and Mass Spectrometry. A batch-specific Certificate of Analysis — also covering endotoxins and heavy metals — is available on request.

How fast is delivery?

We dispatch from within the EU, same day on orders placed before 16:00 CET. EU delivery typically takes 1–3 business days.

What payment methods do you accept?

We accept bank transfer (SEPA), including SEPA instant payments which usually arrive within seconds. Your order ships as soon as the transfer clears.

How should this be stored?

Store at 2–8 °C, protected from light. Once reconstituted, keep refrigerated and use within 30 days.

What is the intended use?

All products are supplied strictly for in-vitro laboratory and research use only. They are not for human consumption, veterinary, or clinical use.

For research use only. Not intended for human consumption. Must be 18+ to purchase. All products are sold as research chemicals.