- Independently HPLC-tested — ≥99% purity
- COA for every batch, emailed with your delivery
- Discreet, tracked worldwide shipping
- Dispatched from the EU and Bali
Somatropin, also referred to as HGH 191AA, is a single-chain polypeptide consisting of 191 amino acids. It corresponds structurally to human growth hormone, a polypeptide produced by somatotropic cells of the anterior pituitary gland.
In controlled laboratory environments, somatropin may be investigated in connection with receptor binding, JAK-STAT signalling, protein-expression pathways, insulin-like growth factor regulation, peptide stability, structure–activity relationships, and analytical characterisation.
Full research description
Published research has examined growth hormone in relation to protein synthesis, lipid and carbohydrate metabolism, and IGF-1 regulation. These findings describe biochemical mechanisms reported in scientific literature and do not establish the safety, efficacy, appropriate dosage, or suitability of this research material for administration to humans or animals.
Somatropin is also the active ingredient in FDA-approved prescription products indicated for specific medical conditions, including growth hormone deficiency. Those approvals apply only to the regulated pharmaceutical products concerned and do not extend to independently supplied research materials. This product is not represented as an approved drug, is not interchangeable with any FDA-approved somatropin product, and has not been established as safe, effective, sterile, or suitable for administration.
References to anti-ageing effects, muscle growth, body composition, athletic performance, recovery, or treatment of any medical condition have been omitted because such wording could imply therapeutic efficacy or intended human use.
The designations somatropin, HGH, HGH 191AA, and recombinant growth-hormone preparations from different sources should not automatically be treated as analytically interchangeable. Sequence, glycosylation, purity, potency, molecular identity, and composition should be verified through appropriate batch-specific analytical documentation.
Each kit contains a total of 36 mg / 108 IU.
Storage & handling
Before reconstitution. Keep the sealed vial cool and dark. Lyophilized peptides are stable this way for the period stated on the certificate.
Reconstitution. Add bacteriostatic water slowly against the inside wall of the vial. Swirl gently to dissolve — never shake, as agitation can damage the peptide chain.
After reconstitution. Store refrigerated and use within the window appropriate for the compound under study. Do not freeze once in solution.
Check that the batch code on the label matches your packing slip on arrival.
COA & testing
Every batch is analysed by an independent laboratory before it is listed. The method for this compound is SDS-PAGE + RP-HPLC.
The certificate shows the main peak purity, the impurity profile, the test date and the laboratory that performed it — tied to the batch code printed on your vial.
Batch for this listing: SP-HGH-2608A. Look it up here.
Shipping & discretion
Orders placed on business days are dispatched the same or next day. We ship multiple times a day, so most orders leave within six hours.
Plain box, neutral sender, no product names or branding on the outside. Tracked worldwide.
Free shipping from €175 in the Netherlands and Belgium, €180 in the rest of Europe and €225 worldwide — and always free on Bali. See the delivery page for rates and times per region.
Research use only
FOR LABORATORY RESEARCH USE ONLY.
For use only by qualified laboratory professionals in controlled research environments.
Not for human or veterinary use.
Not for human consumption.
Not intended for injection, ingestion, inhalation, topical application, or administration to humans or animals.
Not intended for clinical, diagnostic, therapeutic, preventive, nutritional, cosmetic, body-composition, athletic-performance, anti-ageing, or household use.
Not intended for pharmaceutical compounding or for the preparation of any product intended for human or animal administration.
This product is not intended to diagnose, treat, cure, mitigate, or prevent any disease or medical condition, nor is it intended to affect the structure or function of the human or animal body.
This product has not been evaluated or approved by the U.S. Food and Drug Administration.
Handle, store, and dispose of this material in accordance with applicable laboratory safety procedures and all relevant federal, state, and local requirements.