Growth Hormone
Growth Hormone Research Peptides
This category splits into two mechanistically distinct groups that are frequently conflated. GHRH analogues — sermorelin, tesamorelin, CJC-1295 — act at the growth-hormone-releasing hormone receptor. Secretagogues such as ipamorelin and MK-677 act instead at the ghrelin receptor (GHS-R1a). The distinction is the reason the two are studied together in the literature: research examines whether the combination produces a different secretory profile than either class alone.
IGF-1 LR3 belongs to neither group. It is a modified insulin-like growth factor with reduced binding-protein affinity, studied downstream of growth hormone signalling rather than upstream of it, and is included here because the research questions connect.
Structural detail is published on every compound page in this category: full amino acid sequence where the compound is a peptide, CAS number, molecular formula and molar mass. Each lot carries an independent certificate showing measured purity and measured content, linked to the batch code on the vial. Supplied strictly as laboratory research materials.
In this category: Ipamorelin · CJC-1295 · Sermorelin · Tesamorelin · IGF-1 LR3
What to check before buying growth hormone compounds
Purity is half the number. A purity figure tells you what fraction of the powder in the vial is the compound on the label — it tells you nothing about how much powder is in the vial. A lot can assay at 99.8% purity and still be short against its labelled content.
Both numbers are published for every batch here: purity from HPLC, and measured mass against expected content. Match the batch code printed on the vial to the certificate before you rely on either.
Growth Hormone research peptides — common questions
- What is the difference between a GHRH analogue and a secretagogue?
- They act at different receptors. Sermorelin, CJC-1295 and tesamorelin are analogues of growth hormone-releasing hormone and are characterised as acting at the GHRH receptor. Ipamorelin is a ghrelin receptor agonist, which is a separate pathway. Much of the published work studies the two classes together for that reason, and the blends in this catalogue pair one of each.
- Why is CJC-1295 supplied both with and without DAC?
- The Drug Affinity Complex is a modification that extends the molecule’s circulating half-life substantially. The two forms therefore have different pharmacokinetic profiles in the published literature and are studied as distinct compounds. This store lists the No-DAC form, sometimes referred to in the literature as modified GRF (1-29).
- Is IGF-1 LR3 a growth hormone peptide?
- It is downstream of one. IGF-1 is the mediator through which much of growth hormone’s activity is described, and LR3 is a long-acting analogue with a substitution and an N-terminal extension that reduce its binding to IGF-binding proteins. It is grouped here because the research literature treats the axis as one subject.
- What documentation comes with a growth hormone peptide lot?
- An independent certificate for the exact lot shipped, showing HPLC purity, measured content against the labelled amount and the issuing laboratory’s test date. Both the purity and the mass figures are published whichever way they fall — a supplier that publishes only the flattering number has answered the easier question.
