IGF-1 LR3 vs Ipamorelin
IGF-1 LR3 and Ipamorelin are both studied in longevity research, but they are different classes of compound with different reported research applications.
✓ both US-made · third-party tested · batch COA on every order
at a glance
what each one is
IGF-1 LR3
Recombinant IGF-1 analog polypeptide
IGF-1 LR3 is Long R3 insulin-like growth factor 1, a recombinant analog of human IGF-1 carrying an arginine substitution at position 3 and a 13-residue N-terminal extension. Those two modifications are what define it: they substantially reduce its affinity for the insulin-like growth factor binding proteins (IGFBPs) that sequester native IGF-1 in culture systems.
full IGF-1 LR3 profile →Ipamorelin
Synthetic pentapeptide secretagogue
Ipamorelin is a synthetic pentapeptide and a selective growth-hormone secretagogue, meaning it is characterized in the literature as an agonist at the growth-hormone secretagogue receptor (GHS-R1a), the same receptor targeted by the endogenous ligand ghrelin. Its selectivity profile is the reason it is so frequently chosen as a reference agonist in receptor-signaling work.
full Ipamorelin profile →where the research differs
Both compounds are supplied strictly for laboratory research use only. Reported research contexts for each:
IGF-1 LR3
- IGF-1 receptor binding and signal-transduction research
- PI3K/Akt and MAPK pathway research in cellular models
- Cell-culture media supplementation for proliferation research
- IGFBP interaction and free-ligand availability studies
- Comparative analog research against native IGF-1
Ipamorelin
- GHS-R1a (ghrelin receptor) binding and agonist research
- Secretagogue-pathway signal-transduction research
- Comparative receptor-selectivity studies against non-selective secretagogues
- Endocrine-signaling research models
- Peptide stability and structure–activity research
shop either compound
Any 2 different compounds take 20% off, any 3 take 30% — applied automatically in the cart, no code. Orders placed Monday–Friday ship by 2pm CT, free over $100.
build a stack with both →frequently asked
What is IGF-1 LR3?
IGF-1 LR3 is Long R3 insulin-like growth factor 1, a recombinant analog of human IGF-1 with an arginine substitution at position 3 and an N-terminal extension. Verve supplies it as a research compound for laboratory use only, not for human or veterinary use.
How does IGF-1 LR3 differ from native IGF-1?
Its structural modifications reduce affinity for IGF binding proteins, so more of the ligand remains unbound in culture systems. Researchers use that property to control free-ligand availability in in-vitro models.
What is Ipamorelin?
Ipamorelin is a synthetic pentapeptide characterized as a selective agonist at the growth-hormone secretagogue receptor (GHS-R1a). Verve supplies it as a research compound for laboratory use only, not for human or veterinary use.
What is Ipamorelin studied for in research?
It is used as a reference agonist in GHS-R1a receptor-binding and secretagogue-pathway signaling research in in-vitro and pre-clinical models. Verve makes no claims about effects in humans or animals.
related comparisons
verve products are sold for laboratory research and development purposes only and are not intended for human or veterinary use of any kind. statements on this site have not been evaluated by the FDA.