GH axis
GH axis: 18 research peptides from Ipamorelin to Follistatin 344
Secretagogues and GHRH analogues for growth hormone axis research.
The GH axis in laboratory research
The growth hormone (GH) axis is one of the classic areas of endocrine research. Two main signals regulate it: growth hormone releasing hormone (GHRH) and ghrelin, which acts through the GHS-R receptor. The GH axis category brings together 18 peptides that researchers compare in in vitro work and animal model studies.
Three groups, one axis
GHS-R secretagogues
Ipamorelin, GHRP-2, GHRP-6 and Hexarelin act on the ghrelin receptor. Ipamorelin is a pentapeptide selective for this receptor, while GHRP-2, GHRP-6 and Hexarelin are hexapeptides.
GHRH and GnRH analogues
CJC-1295 (without and with DAC), Sermorelin and Tesamorelin are GHRH analogues. Sermorelin corresponds to the GHRH fragment covering the first 29 amino acids, and Tesamorelin is registered as a medicine in the United States and studied in clinical trials. Gonadorelin and Triptorelin are GnRH analogues, a hypothalamic hormone.
IGF factors and myostatin
IGF-1 LR3 is a modified IGF-1 analogue, widely used in cell culture. MGF and PEG-MGF correspond to fragments of the IGF-1Ec isoform. ACE-031, GDF-8 and Follistatin 344 relate to the myostatin and activin pathway.
The role of DAC
DAC (Drug Affinity Complex) is a chemical linker that binds albumin, the main protein in blood plasma. In research models it extends how long the molecule stays in circulation, which is why both CJC-1295 versions are compared in duration-of-action studies.
Comparison at a glance
| Peptide | Group | Key feature |
|---|---|---|
| Ipamorelin | GHS-R | Pentapeptide |
| CJC-1295 (no DAC) | GHRH | No DAC linker |
| CJC-1295 DAC | GHRH | Binds albumin |
| CJC-1295 + Ipamorelin | Mixture | GHRH and GHS-R |
| Sermorelin | GHRH | Fragment 1-29 |
| Tesamorelin | GHRH | Clinically studied |
| Tesamorelin + Ipamorelin | Mixture | GHRH and GHS-R |
| GHRP-2 | GHS-R | Hexapeptide |
| GHRP-6 | GHS-R | Hexapeptide |
| Hexarelin | GHS-R | Hexapeptide |
| Gonadorelin | GnRH | Decapeptide |
| Triptorelin | GnRH | D-Trp6 analogue |
| IGF-1 LR3 | IGF | IGF-1 analogue |
| MGF | IGF | IGF-1Ec fragment |
| PEG-MGF | IGF | Pegylated MGF |
| ACE-031 | Myostatin | ActRIIB-Fc protein |
| GDF-8 (Myostatin) | Myostatin | TGF-beta protein |
| Follistatin 344 | Activin | Binds myostatin |
Lab handling
- Reconstitute lyophilised material with bacteriostatic water.
- Store lyophilised peptides cold and protected from light, as stated on each product card.
- Check purity for your batch and work out concentrations with the concentration calculator.
Why buy GH axis peptides for research from MOLEVIA
- Purity of at least 99%, confirmed by HPLC, with molecular mass confirmed by MS.
- Orders placed by 14:00 on a working day ship the same day.
- InPost Parcel Locker in Poland with next working day delivery, DPD courier across Europe in 2-4 working days.
- Free delivery from 75 EUR, 65 GBP, 80 USD.
- Automatic volume discount: 2 pcs -5%, 3 pcs -10%, 5 pcs -15%.
Browse the full GH axis range and read our shipping policy.
Frequently asked questions
What does the GH axis category include and how is purity checked?
The category brings together 18 peptides, including GHS-R secretagogues such as Ipamorelin, GHRH and GnRH analogues, IGF factors and myostatin pathway compounds, compared in in vitro work and animal model studies. Every batch is tested by HPLC, which confirms purity of 99% or higher, and the molecular mass is confirmed by mass spectrometry (MS).
In what form are the peptides supplied and how should I store them?
Peptides are supplied as lyophilised powder in vials. Keep the vial tightly sealed, protected from light and moisture, at the temperature stated on the product card. Reconstitute the powder following your laboratory procedure, for example with bacteriostatic water.
How fast does my order ship and how is it delivered?
Orders placed by 14:00 on a business day ship the same day, and later orders ship the next business day. In Poland, an InPost Paczkomat locker delivers on the next business day for PLN 14.99, free from EUR 75. A DPD courier delivers across 29 European countries in 2-4 business days.
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