Description
Research Overview
IGF-1 LR3 (Long Arginine 3 Insulin-Like Growth Factor-1) is a modified analogue of naturally occurring IGF-1 engineered for prolonged activity in laboratory settings. The peptide contains a substitution at the third amino acid and an extended amino acid sequence that reduces binding to IGF-binding proteins, allowing researchers to investigate IGF-1 receptor signaling over longer experimental periods.
Researchers frequently utilize IGF-1 LR3 when studying:
- Cellular proliferation
- Skeletal muscle biology
- Tissue regeneration pathways
- Protein synthesis signaling
- Glucose metabolism
- Growth factor receptor activation
- Recovery mechanisms
- Cell differentiation
Product Features
- High purity lyophilized peptide
- Manufactured under strict quality standards
- Third-party tested
- Secure packaging
- Available in single vials and kit configurations
- Ships from the United States
Storage
- Store lyophilized peptide in a cool, dry environment.
- Refrigerate after reconstitution.
- Avoid repeated freeze/thaw cycles.
- Protect from excessive heat and direct light.
Laboratory Use
IGF-1 LR3 is commonly selected for research involving:
- IGF-1 receptor activation
- PI3K/Akt signaling
- MAPK pathway research
- Skeletal muscle physiology
- Cellular growth mechanisms
- Regenerative biology
- Endocrine signaling
- Metabolic pathway analysis
Why Researchers Choose 4LD
At 4LD, every peptide is selected with consistency and quality in mind.
We focus on:
- Reliable manufacturing
- Independent quality verification
- Fast fulfillment
- Secure packaging
- Responsive customer support
Frequently Asked Questions
What is IGF-1 LR3?
IGF-1 LR3 is a modified analogue of insulin-like growth factor-1 developed for laboratory research requiring extended receptor activity and reduced binding to IGF-binding proteins.
What makes IGF-1 LR3 different from IGF-1?
IGF-1 LR3 contains structural modifications that extend its biological persistence and reduce affinity for IGF-binding proteins, allowing researchers to study signaling over longer periods compared with native IGF-1.
What research areas commonly use IGF-1 LR3?
Research applications frequently include:
- Cell signaling
- Muscle biology
- Regenerative medicine
- Growth factor biology
- Metabolic research
- Protein synthesis pathways
How should IGF-1 LR3 be stored?
Lyophilized peptide should be stored according to the product instructions. After reconstitution, refrigeration is generally recommended while minimizing repeated freeze-thaw cycles.
Product Specifications
Product: IGF-1 LR3
Strength: 1 mg
Form: Lyophilized Peptide
Available Options: Single Vial or 10 Vial Research Kit
Category: Growth Factors
Manufactured In: United States
Quality Testing: Third-Party Tested
Storage: Refrigerate upon receipt. For long-term storage, keep frozen until ready for laboratory use.
Recommended Products
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- BPC-157
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- Ipamorelin
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Research Use Disclaimer
For Research Use Only.
Products sold by 4LD Research are intended exclusively for laboratory and scientific research by qualified professionals. They are not intended for human consumption, veterinary use, therapeutic procedures, or diagnostic applications. Researchers are responsible for complying with all applicable laws, regulations, and institutional guidelines governing the handling and use of research materials.









