
IGF-1 LR3 is a souped-up version of IGF-1, the hormone that actually carries out most of growth hormone's effects on tissue. It's studied for muscle growth and cellular repair.
A deeper look for the curious
For readers who want the full mechanism — feel free to skim.
IGF-1 LR3 is a modified version of IGF-1 — the hormone that actually does most of growth hormone's work at the tissue level. The modifications let it resist being grabbed by carrier proteins, so it stays active about three times longer than natural IGF-1 and works more efficiently.
What researchers have observed in studies
3x bioactivity vs. native IGF-1 due to IGFBP resistance
Directly activates PI3K/Akt/mTOR pathway
Promotes protein synthesis and satellite cell activation
Longer half-life enables sustained receptor activation
IGF-1 receptor (IGF-1R)
83 amino acid modified IGF-1 analog
Amino acid chain
What scientists study this compound for
Directly activates the pathways behind muscle protein synthesis and repair.
Studied for accelerating healing of muscle, tendon, and skin.
Explored for cellular rejuvenation and its role in driving tissue regeneration at the molecular level.
High-performance liquid chromatography confirms compound purity for every batch we produce.
ESI-MS verifies molecular weight and structural identity match the target compound.
Complete analytical data including chromatograms and mass spectra available per batch.
Laboratory use only. This product is sold for laboratory use and is not intended for human consumption or medical use.
Third-party verified. Typical purity ≥97%.