Description
IGF-1 LR3 (Insulin-like Growth Factor 1, Long Arginine-3) is a recombinant 83-amino-acid analog of human IGF-1 with substitution and extension modifications that significantly extend its half-life by reducing IGFBP binding. IGF-1 LR3 binds to the IGF-1 receptor and is one of the most-used research peptides in cellular growth, protein synthesis, and mitogenic pathway studies.
The LR3 modification gives IGF-1 LR3 a substantially longer functional half-life than native IGF-1, making it a valuable tool for sustained IGF-1 receptor research.
Research areas studied
- IGF-1 receptor signaling in cell research
- Mitogenic and protein synthesis pathway studies
- Growth factor pharmacology research
Quality assurance
- HPLC verified at 99%+ purity
- Certificate of Analysis (COA) available upon request
- Lyophilized in a research-grade facility under controlled conditions
For research purposes only. Not for human consumption, diagnostic, or therapeutic use.

