IGF-1 LR3
Long-arginine IGF-1 analog used in growth-factor research.
Every batch, independently verified.
Each batch is analyzed by an independent, accredited third-party laboratory before it ships. This is the released report for the batch currently in stock, with the laboratory values exactly as they were published for that lot.
Every batch on record
Open the published report for any lot on record. Your order ships with its own lot-specific report.
About IGF-1 LR3
IGF-1 LR3 (Long Arg3 IGF-1) is an 83-amino-acid analog of insulin-like growth factor 1. It differs from the native 70-residue sequence in two ways: arginine replaces glutamic acid at position 3, and a 13-amino-acid extension is added at the N-terminus. Together these changes sharply reduce binding to IGF-binding proteins, so more of the analog stays free and active, which is why it is widely used as a growth supplement in cell-culture research.
Not for human, veterinary, or food use. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.
All research findings presented on this page are sourced from peer-reviewed journals and official publications. They are provided for educational reference only and should not be interpreted as medical advice or product claims.
By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations. See our Disclaimer and Terms of Service.
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Lab guides
Protocols and background reading for working with this compound.