Sermorelin
A synthetic 29-amino-acid analog of GHRH studied for its effects on pituitary growth hormone secretion. One of the most established GH research peptides.
What Is Sermorelin?
Sermorelin is a synthetic peptide consisting of the first 29 amino acids of the 44-amino-acid human growth hormone-releasing hormone (GHRH). It was one of the first GHRH analogs approved for clinical use (Geref) and remains one of the most well-characterized compounds in GH research. Sermorelin stimulates pituitary GH production through a natural, pulsatile pattern.
History
Sermorelin was developed following the isolation and characterization of human GHRH in 1982 by researchers at the Salk Institute. The 29-amino-acid fragment was found to retain the full biological activity of the 44-amino-acid parent molecule. Sermorelin received regulatory approval in 1997 under the brand name Geref for diagnostic use. Though Geref was later discontinued due to manufacturing issues (not safety concerns), sermorelin remains one of the most extensively studied and well-characterized GHRH analogs in the research literature.
Certificate of Analysis (COA)
Every batch of our peptides is independently tested by third-party laboratories to verify purity, identity, and potency. We maintain 98%+ purity standards across our entire product catalog.
Reconstitution & Storage
Reconstitute with bacteriostatic water (BAC water). Using a sterile syringe, slowly inject 1-2mL of BAC water into the vial, directing the stream against the glass wall. Do not inject directly onto the lyophilized powder. Gently swirl until fully dissolved. Do not shake.
Store unreconstituted vials at room temperature away from direct sunlight. After reconstitution, store at 2-8°C (standard refrigerator). Use within 30 days of reconstitution. Do not freeze.
For research purposes only.
Shipping & Handling
All orders ship within 1-2 business days via USPS Priority or UPS Ground. Peptides are shipped in insulated packaging to maintain product integrity during transit.
Free shipping on orders over $150. Standard shipping rates apply for orders under $150. Expedited shipping options available at checkout.
All packages are shipped discreetly with no external branding or product identifiers. Tracking information is provided via email once your order ships.
All products sold on this website are intended for research and identification purposes only and are not intended for human dosing, injections, or ingestion. These products are not FDA-approved to diagnose, treat, cure, or prevent any disease. By purchasing, you certify they will be used solely for legitimate laboratory research and not for human or animal consumption.
Sermorelin
Frequently Asked Questions
What is sermorelin?
Sermorelin is a synthetic peptide consisting of the first 29 amino acids of human growth hormone-releasing hormone (GHRH). It stimulates the pituitary gland to produce and release growth hormone in a natural, pulsatile pattern. It was previously granted regulatory approval under the brand name Geref for diagnostic use.
Does sermorelin work?
Published research documents sermorelin's ability to stimulate endogenous growth hormone secretion and elevate IGF-1 levels in clinical and preclinical models. Studies by Walker et al., Corpas et al., and others report measurable effects on GH dynamics, body composition, and sleep quality in research settings.
What is sermorelin used for?
In research settings, sermorelin is studied for its effects on pituitary growth hormone stimulation, age-related GH decline, sleep quality improvement through GH-mediated pathways, lean body composition, and bone density maintenance. It is one of the most established GHRH analogs in the published literature.
Does sermorelin increase testosterone?
Research on sermorelin primarily focuses on growth hormone secretion, not direct testosterone modulation. Some studies have examined the broader endocrine effects of GH elevation, including potential indirect influences on hormonal balance. Protocol Aminos sells sermorelin for research purposes only.
Does sermorelin need to be refrigerated?
Yes. Store sermorelin in a refrigerated environment (2–8°C) away from direct light. Keep the vial sealed when not in use. All Protocol Aminos peptides ship with storage guidelines included.
Is sermorelin a steroid?
No. Sermorelin is a peptide, not a steroid. It is a synthetic analog of growth hormone-releasing hormone (GHRH) that stimulates the pituitary gland. It has a fundamentally different mechanism and molecular structure from anabolic steroids.
Does the product come with instructions?
Each order includes product documentation with storage requirements and handling guidelines. For research guidance, visit our blog at /blog.
What's the actual amount in each vial?
Each vial contains the labeled amount of Sermorelin in liquid form. The exact quantity is verified via third-party testing and documented on the batch-specific Certificate of Analysis.
Are additional supplies needed?
No. All Protocol Aminos products ship in liquid form, ready for immediate research use. No additional preparation, mixing, or supplies required.
How long does a vial last?
Shelf life depends on storage conditions. Store refrigerated at 2–8°C, away from direct light, and keep sealed when not in use. Specific stability data is available on request.