Where to Buy IGF-1 LR3
Explore trusted research peptide suppliers selling IGF-1 LR3 — with available third-party COAs, lab sources, and shipping data. No paid rankings.
About IGF-1 LR3
IGF-1 LR3 (Long R3 Insulin-like Growth Factor-1) is an 83-amino acid analog of human IGF-1 with a longer half-life and reduced binding to IGF binding proteins (IGFBPs). It is studied in research for its effects on cellular growth signaling and IGF-1 receptor activation.
IGF-1 LR3 is sold worldwide as a research-use-only (RUO) compound. Because of its 83-amino acid length, manufacturing quality and proper folding directly affect biological activity — third-party lab testing (HPLC, mass spectrometry) and certificates of analysis matter when comparing options.
IGF-1 LR3 Suppliers
Each card shows what the supplier actually publishes — lab data, COA source, and how long shipping takes.
Cernum Biosciences
EuroPeptides
Uther
Peptide CentreWhat to look for
When comparing IGF-1 LR3 suppliers, the most useful transparency signals are:
- Third-party COAs — independent HPLC and mass spectrometry results from a recognised lab (Janoshik, Chromate, etc.)
- Folding & purity — IGF-1 LR3 is an 83-aa polypeptide; correct disulfide bonding and high purity are critical to biological activity
- Cold-chain handling — IGF-1 LR3 should be shipped and stored cold; suppliers with proper cold-chain documentation reduce degradation risk
- Endotoxin & heavy metals — additional safety testing for research use
- Vial size — typically supplied in 1mg vials
Frequently Asked Questions
What is IGF-1 LR3?
IGF-1 LR3 (Long R3 Insulin-like Growth Factor-1) is an 83-amino acid analog of human IGF-1 with a longer half-life and reduced binding to IGF binding proteins. It is studied in research for its effects on cellular growth signaling and IGF-1 receptor activation.
Where can I buy IGF-1 LR3?
IGF-1 LR3 is sold by multiple research peptide suppliers worldwide. The suppliers above ship to the United States, Europe, the UK, Australia, and other regions, with available lab data and transparency signals.
What should I look for in an IGF-1 LR3 supplier?
Look for third-party COAs (HPLC and mass spectrometry), endotoxin and heavy-metals testing, transparent batch documentation, and cold-chain handling. IGF-1 LR3 is particularly sensitive to manufacturing quality due to its length.
How is IGF-1 LR3 different from regular IGF-1?
IGF-1 LR3 has an arginine substitution at position 3 and an extra 13-aa N-terminal extension. These modifications give it a half-life of about 20–30 hours (compared to ~10 minutes for native IGF-1) and reduce binding to IGFBPs.