What is Sermorelin?​
Sermorelin is a synthetic 29-amino acid analog of growth hormone-releasing hormone (GHRH 1-29), the bioactive fragment of native 44-amino acid GHRH. Developed in the 1980s for growth hormone regulation research, this truncated peptide acts as a GH secretagogue—binding to anterior pituitary GHRH receptors while retaining full biological activity of native GHRH, with enhanced stability and practicality for laboratory use.​
As a research tool, its compact sequence ensures excellent solubility in aqueous solutions and reliable reconstitution stability (lyophilized form). Its predictable pharmacokinetics and well-characterized mechanism make it ideal for studying GH dynamics, pituitary function, metabolic signaling, and age-related physiological changes.​
How Sermorelin Works​
Core Mechanism​
Sermorelin binds selectively to GHRH receptors on pituitary somatotrophs, activating cAMP/PKA signaling cascades that stimulate pulsatile endogenous GH secretion. Unlike direct GH administration, it preserves the hypothalamic-pituitary axis’ natural feedback regulation (via IGF-1 and somatostatin), mimicking physiological GH release patterns—critical for studying normal GH axis function.​
Key Downstream Effects​
1.IGF-1 Mediation: GH released by sermorelin stimulates hepatic/peripheral IGF-1 production, activating anabolic pathways (protein synthesis, tissue growth, cellular proliferation) without disrupting feedback control.​
2.Metabolic Regulation: Promotes lipolysis, shifts substrate utilization toward fat oxidation, and modulates glucose homeostasis—studied for body composition and energy balance research.​
3.Sleep-Recovery Interactions: Enhances slow-wave sleep (where GH secretion peaks) and supports tissue repair processes, making it valuable for neuroendocrine-sleep research.​
Primary Research Applications​
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Age-Related GH Decline: Restores pulsatile GH secretion in aging animal models, aiding studies on somatotropic axis aging and age-related physiological decline.​
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Body Composition: Investigated for effects on lean mass retention, adipose tissue reduction, and bone mineral density (preclinical models).​
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Metabolic Function: Studied for lipid metabolism regulation, insulin sensitivity, and energy expenditure modulation.​
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Sleep & Recovery: Used to explore neuroendocrine regulation of sleep architecture and GH-mediated tissue repair.​
Peptide Specifications​
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Handling & Storage Guidelines​
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Store lyophilized powder at -20°C, sealed and protected from light/moisture.​
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Reconstitute with sterile/bacteriostatic water (1-2mg/mL) without vigorous shaking (avoids denaturation).​
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Aliquot reconstituted solution to prevent repeated freeze-thaw cycles; freeze aliquots at -20°C to -30°C if not used immediately.​
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Follow standard aseptic technique and institutional biosafety guidelines.​
Quality Assurance​
Every batch undergoes rigorous third-party testing (Janoshik et al.) with lot-specific Certificates of Analysis (COAs) providing:​
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Peptide identity (HPLC/MS verification)​
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Purity quantification (≥98%)​
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Sterility confirmation (no bacterial/fungal contamination)​
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Endotoxin testing (LAL-assayed, below research thresholds)​
COAs are readily accessible via our Lab Tests page for full transparency and audit compliance.​
Legal & Regulatory Disclaimer​
Sermorelin is supplied exclusively for laboratory research use—not approved by the FDA or any regulatory authority for human/animal consumption, clinical/therapeutic use, or diagnostics. Purchasers are responsible for complying with all local, national, and international regulations governing research peptide handling and use.​

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