Our IGF-1 LR3 | 1mg research material is formulated for use in laboratories, academic facilities, and professional scientific environments. IGF-1 LR3 (Insulin-Like Growth Factor Long Arg3) is a synthetic research peptide commonly studied for its interaction with cellular pathways, receptor signaling, and biochemical modeling. Research context: see published IGF-1 LR3 research (PMID: 11472075) for further reading.

IGF-1IR3 | 1MG: Key Research Facts
This peptide is frequently used in controlled in-vitro experiments to examine growth factor behavior, molecular binding responses, and cellular activity. Each batch is produced according to strict research-grade quality controls to ensure purity, stability, and consistency, providing dependable results across experimental setups.
The product is securely packaged to maintain structural integrity during transport and storage. This material is intended strictly for qualified laboratory personnel and is not approved for human or veterinary administration.
Key Features
High-purity IGF-1 LR3 (1mg) research peptide
Consistent and stable formulation for laboratory experiments
Manufactured under strict quality and purity standards
Suitable for biochemical, cellular, and molecular research
Secure packaging for professional laboratory environments
Research Applications
This material may be used in controlled research studies such as:
In-vitro peptide and receptor interaction analysis
Cellular pathway evaluation
Molecular signaling and biochemical modeling
Academic and commercial scientific research
Quality Assurance
Every batch is tested for purity, identity, and stability to ensure researchers have a dependable material capable of producing reproducible results.
Important Notice
This product is sold for research purposes only. Not for human consumption, medical use, therapeutic use, or veterinary application. For qualified laboratory personnel only.
Buy Igf-1ir3 | UK — Research Grade Supply
Igf-1ir3 | is available in the UK from Arma Peptides. Our Igf-1ir3 | is supplied at ≥99% HPLC-verified purity for laboratory and research use. Each batch of Igf-1ir3 | UK comes with a third-party certificate of analysis. Igf-1ir3 | is lyophilised powder, sealed under nitrogen, and shipped with tracked delivery across the UK. For research protocols involving Igf-1ir3 |, purity and batch consistency are critical — Arma Peptides guarantees both. All Igf-1ir3 | orders ship within 24 hours of payment confirmation. This Igf-1ir3 | product is strictly for in-vitro research and laboratory use only.
Mechanism of Action
IGF-1 LR3 is a modified analogue of insulin-like growth factor 1, engineered with an extended 13-amino-acid N-terminus and a substitution at the Glu3 position. Research (PMID: 11472075) shows this modification substantially reduces binding affinity to IGF-binding proteins (IGFBPs) compared to native IGF-1, resulting in a longer circulating half-life and sustained bioavailability in research models — a key reason LR3 variants are used in preference to native IGF-1 in extended-duration studies.
Research Protocol Considerations
Because IGF-1 LR3 remains bioavailable for longer than native IGF-1, published research has used less frequent dosing intervals in study designs examining muscle satellite cell proliferation and systemic anabolic signalling. Reconstitution and storage protocol consistency is critical for reproducibility given the peptide’s sensitivity to degradation.
Frequently Asked Questions
Why is the LR3 variant used instead of native IGF-1 in research?
The reduced IGFBP binding affinity of LR3 extends its half-life, making it more practical for research protocols requiring sustained exposure.
What purity does Arma Peptides guarantee?
≥99% HPLC-verified purity, Certificate of Analysis supplied per batch.
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