Buy Tesamorelin 2026 — GHRH(1-44) analogue for GH/IGF-1 axis research (EU)

Peptide Research · 28 June 2026 · 11 min read · Research Use Only

Tesamorelin at a glance

What is Tesamorelin?

Tesamorelin – also known in the literature as TH9507 managed – is a synthetic, stabilised analogue of human Growth Hormone-Releasing Hormone (GHRH). It is based on the complete GHRH(1-44) sequence, which is a chain of 44 amino acids, and carries at the N-terminus a trans-3-Hexenoyl modification. This modification is the structural feature that distinguishes tesamorelin from the native GHRH sequence and is described in research as a stabilising element. The peptide is supplied as a lyophilised product in a sealed vial (10 mg). In laboratory research, Tesamorelin serves as a defined reference substance for the investigation of GHRH-related model systems. The CAS number and molecular formula are documented in the batch-specific certificate of analysis; the COA of the delivered batch is always authoritative.

Molecular profile & target structure

Tesamorelin is derived from GHRH(1-44), the natural sequence by which the hypothalamic releasing hormone binds to the GHRH receptor binds. The GHRH receptor is a G protein-coupled receptor that is characterised in the preclinical literature as a binding site for GHRH and its analogues. Through the N-terminal trans-3-hexenoyl group, tesamorelin is described in studies as an analogue stabilised compared to the native sequence. The combination of a defined 44-amino acid sequence, clearly characterisable modification, and good analytical accessibility makes tesamorelin a frequently used reference in study models concerning GHRH receptor binding and downstream GH-/IGF-1 axis.

What in-vitro and animal model studies document

The following summary reflects only what is described in the publicly accessible preclinical literature – it is not a statement about an effect or suitability in humans.

• GHRH receptor binding: Published work investigates tesamorelin as an analogue of the GHRH(1-44) sequence in in-vitro receptor binding models on the GHRH receptor.
• GH axis Several preclinical studies examine tesamorelin in the context of the growth hormone (GH) axis in cellular and animal experimental model systems.
• IGF-1 axis Individual studies document observations along the downstream IGF-1 axis in animal models.
• Structural stability: The trans-3-hexenoyl modification is described in the literature as a feature of an analogue stabilised compared to the native GHRH sequence and is used in comparative in-vitro studies.

These observations stem from in vitro and animal models. They provide the basis for research interest in tesamorelin, but do not make any statements about its safety, efficacy, or use outside of laboratory research.

Purity, COA & Analytical Testing

Purity and identity are the two values that count. HPLC demonstrates purity (target value ≥ 99 %), LC-MS confirms the identity via molecular mass. Both values are listed on the batch-related COA. We explain how to read such a certificate in Understanding and reading a Certificate of Analysis (COA); the procedures themselves in Peptide Purity: HPLC and LC-MS Explained. As tesamorelin is a long 44-amino acid peptide, clean HPLC purity and mass spectrometric identity confirmation are particularly meaningful.

Storage & Handling

As a lyophilised product, tesamorelin is stable when it is kept cool, dry and protected from light and stored – ideally at -20°C for longer storage. Please refer to the COA for batch-specific information. Principles: Storing and Handling Research Peptides.

Buying Tesamorelin in the EU – what matters

What matters is not the price, but this: Does the label match the contents? Here's what BlitzLab delivers on:

• Batch-specific COA from a third-party laboratory – HPLC (purity) and LC-MS (identity), carried out externally, not by us.
• EU Shipping, discreetly packaged, with tracking – usually 2–5 working days.
• Transparent RUO stance – clear labelling, complete Compliance page, no claims of efficacy or cure.

What else to look out for with a reputable provider: 7-point checklist.

Frequently asked questions about buying Tesamorelin

Note on Sources & RUO

This guide summarises publicly available preclinical research literature (in vitro and animal models) on Tesamorelin. The enclosed Certificate of Analysis is always authoritative for the identity, CAS number, molecular formula and purity of the delivered batch. All information is intended for research purposes only and does not constitute medical advice, dosage or application recommendations.