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Sermorelin 5mg: GHRH Peptide

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Sermorelin (also known as GRF 1-29) is a synthetic 29-amino-acid peptide fragment of Growth Hormone–Releasing Hormone (GHRH). It is studied for its ability to selectively stimulate the pituitary GHRH receptor, making it a key molecule in research related to growth hormone signaling, endocrine regulation, and hypothalamic–pituitary axis function.

As a shorter, stable analogue of naturally occurring GHRH, Sermorelin provides a targeted tool for evaluating growth hormone pathways in laboratory settings.


Scientific Background

Native GHRH is a 44-amino-acid peptide. Sermorelin represents the biologically active first 29 amino acids, which retain full receptor-binding and functional activity.

In research environments, Sermorelin is associated with:

  • Activation of GHRH receptors in pituitary cells

  • Promotion of pulsatile growth hormone release

  • Regulation of IGF-1 signaling pathways

  • Study of endocrine feedback loops

  • Exploration of hypothalamic–pituitary interactions

Because it mimics natural GHRH activity while being smaller and more stable, Sermorelin is widely used in both in-vitro and in-vivo growth hormone–related studies.


Research Areas of Interest

All information below is intended strictly for laboratory, scientific, and in-vitro research only.

1. Growth Hormone Pathway Research

Sermorelin is used to explore:

  • GH pulsatility

  • Pituitary receptor activation

  • Signaling cascades linked to IGF-1 expression

2. Endocrine & Metabolic Models

Researchers evaluate potential roles in:

  • Energy-regulation pathways

  • Hormonal feedback systems

  • Anabolic and metabolic signaling

3. Cellular & Genetic Research

GHRH receptor activation is studied for its effects on:

  • Cell proliferation

  • Gene transcription

  • Peptide–receptor kinetics

4. Comparative Incretin & Peptide Studies

Sermorelin is often compared with or studied alongside:

  • CJC-1295

  • Ipamorelin

  • GHRP-2 and GHRP-6

  • Tesamorelin

  • Endogenous GHRH

5. Hypothalamic–Pituitary Axis Models

Due to its targeted mechanism, Sermorelin is used to investigate:

  • Pituitary stimulation

  • GH secretory behavior

  • Hormonal communication between brain and endocrine tissues

These findings are based on preliminary, preclinical, and in-vitro studies — not validated clinical outcomes.


Molecular Profile
  • Peptide: Sermorelin (GRF 1-29)

  • Sequence Length: 29 amino acids

  • Sequence: Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Leu-Ser-Arg-NH₂

  • Form: Lyophilized powder

  • Purity: ≥ 98% (HPLC tested)


Storage & Stability
  • Store lyophilized peptide at –20°C

  • Protect from heat, moisture, and light

  • Reconstituted solutions should be used promptly or stored per laboratory guidelines

  • Avoid repeated freeze-thaw cycles


  Each 3ml vial is formulated with 5mg of highly purified (>99%) lyophilized Sermorelin, produced in sterile environments that meet research-grade standards. Prime Peptides validates every batch through third-party laboratory testing to ensure exact molecular composition, stable peptide structure, and consistent results suitable for a wide range of experimental designs.

What Are Peptides?

Peptides are short chains of amino acids studied in laboratory and research settings for their interaction with biological pathways.

Usage & Storage

Store peptides in a cool, dry place away from direct light. For long-term stability, keep lyophilized (powder) peptides refrigerated at 2–8°C. Once reconstituted, store in the refrigerator and use within a short period to maintain integrity. Avoid repeated temperature changes.

Shipping & Delivery

All orders ship within 24 hours (Monday–Friday) from our facility. Delivery typically takes 1-2 business days depending on your location. Once shipped, you’ll receive a tracking number to monitor your order in real time.

Payment Information

We currently accept E-transfer only. Payment instructions are sent automatically after checkout.

Disclaimer: All peptides offered by Prime Peptides are strictly intended for laboratory research purposes only. These products are not approved for human consumption, medical use, therapeutic applications, or diagnostic procedures.
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