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Verified Lab Results
Finished in the USA
Research Use Only
Growth Factor & Tissue Signaling Research · Myogenic Peptides
IGF-1 LR3 is a recombinant long-acting analog of insulin-like growth factor-1, a single-chain polypeptide growth factor. It carries an arginine substitution at position three and a 13-amino-acid N-terminal extension, modifications that reduce binding to IGF-binding proteins and extend IGF-1 receptor engagement in cell-culture and preclinical model systems. It is studied in work on cell proliferation, protein synthesis signaling, and metabolic pathway regulation.
Real Peptides supplies IGF-1 LR3 as a 1mg lyophilized multi-dose vial. Every batch is assayed by an independent laboratory, and the certificate for the current lot is published on the lab results page so purity and identity can be reviewed before purchase. Orders ship from Florida and California within 24 hours. Sold strictly for research use only; not for human or animal consumption.
IGF-1 LR3 · 1mg
$34.56$86.40
Recommended with this order
Frequently paired with this compound by other researchers.
Every node is a test the laboratory ran on this batch — read straight off this product's certificate in our COA registry. Tap a node for the standard it had to meet and the result that came back.
RP-IGF1VLab KoveraTested 12-Aug-20265 tests this batch
Purity
99.346%
Average purity across the conformity vials pulled from this batch, by HPLC. The per-vial figures print further down the certificate.
hover to hold · tap a node for the standard and the result
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RUO
For Research Use Only. Not for human consumption or therapeutic treatment.
99% Pure | USA Finish | Multi Dose | Finished in the USA
IGF-1 LR3 is a long-acting analog of insulin-like growth factor-1 (IGF-1) engineered for extended receptor binding and enhanced bioactivity. Ideal for labs probing cell proliferation, protein synthesis, and metabolic regulation, IGF-1 LR3 delivers sustained IGF-1 receptor activation in both cell-culture and small-animal models. Each 1 mg vial is HPLC-verified to ≥ 99% purity, and endotoxin-screened (< 0.1 EU/mg), ensuring reproducible, high-precision data for your IGF-1 research.
What Is IGF-1 LR3 Peptide?
IGF-1 LR3 is a synthetic analog of human insulin-like growth factor-1 in which the first three amino acids are removed and an arginine added at position 3. This modification greatly extends its half-life and receptor affinity. In research settings, IGF-1 LR3 is used to examine IGF-1 receptor dynamics, anabolic signaling, and metabolic regulation with greater temporal control than native IGF-1.
Why Choose IGF-1 LR3?
Researchers select IGF-1 LR3 when they require prolonged and potent IGF-1 activity without rapid degradation. Its enhanced stability and high receptor affinity produce consistent activation of downstream pathways—mTOR, MAPK, and PI3K/Akt—critical for studies of cell proliferation, protein synthesis, and glucose metabolism. Manufactured and verified to ≥ 99% purity, IGF-1 LR3 ensures rigorous reproducibility across both in vitro and in vivo protocols.
What Sets IGF-1 LR3 Apart?
Unlike native IGF-1, IGF-1 LR3’s structural tweaks confer a three- to five-fold longer half-life and increased receptor binding, making it uniquely suited for sustained signaling experiments. Its ability to maintain elevated IGF-1 levels for over 24 hours in animal models eliminates the need for multiple daily doses, simplifying study design and reducing variability. This precision makes IGF-1 LR3 the go-to reagent for high-impact anabolic and metabolic-pathway research.
Growth Factor & Tissue Signaling Research compounds
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