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IGF-LR3

In Stock

$80.00

Verified Test Results

Every batch, independently verified.

Each batch is analyzed by an ISO/IEC 17025 accredited third-party laboratory before it ships. This is the released report for the current batch, exactly as the lab signed it.

VL
Vanguard Laboratory
Independent, ISO/IEC 17025 accredited
Certificate of Analysis
≥99.80 ± 0.18%
Purity by HPLC
LotIGFLR325
Tested12/19/2025
Labeled1 mg
Measured1.04 mg
ISO 17025 Accredited 9× Tested
View signed certificate
Full QC Panel ✓ 2 passed
Chromatographic Purity
≥99.80% ± 0.18%
Assay
1.04 mg
Chromium (Cr)
≤0.05 ppm (LOQ)
ND
Arsenic (As)
≤0.01 ppm (LOQ)
ND
Cadmium (Cd)
≤0.01 ppm (LOQ)
ND
Lead (Pb)
≤0.01 ppm (LOQ)
ND
Mercury (Hg)
≤0.005 ppm (LOQ)
ND
Endotoxins
≤5 EU/kg (USP/FDA threshold)
Pass - ≤0.05 EU/mg
Pass
Sterility
USP 71
Pass - No Growth Detected
Pass

IGF-1 LR3

Advanced Muscle Growth & Cellular Recovery Research Peptide

IGF-1 LR3 (Insulin-Like Growth Factor-1 Long R3) is an extended-acting analog of naturally occurring IGF-1, engineered for enhanced stability and prolonged biological activity. Widely studied for its role in muscle protein synthesis, cellular growth, tissue regeneration, and nutrient partitioning, IGF-1 LR3 has become one of the leading research peptides in performance physiology, recovery, and regenerative medicine.

Its prolonged half-life and reduced binding to IGF-binding proteins provide researchers with an advanced platform for investigating skeletal muscle adaptation, cellular repair, and metabolic function.

Key Research Areas

  • Studied for lean muscle growth and hypertrophy
  • Supports muscle protein synthesis and cellular regeneration
  • Investigated for enhanced recovery following exercise and injury
  • Explored for satellite cell activation and muscle repair
  • Supports nutrient partitioning and glucose utilization
  • Studied for connective tissue and soft tissue regeneration
  • Investigated for exercise performance and recovery capacity
  • Supports longevity and regenerative medicine research

Mechanism of Action

IGF-1 LR3 is designed to bind to the Insulin-Like Growth Factor-1 (IGF-1) receptor, activating intracellular pathways involved in cellular growth, protein synthesis, tissue repair, and metabolic adaptation. Its structural modification extends biological activity while reducing affinity for IGF-binding proteins, allowing researchers to investigate prolonged IGF-1 signaling compared with native IGF-1.

Research continues to explore its influence on muscle hypertrophy, cellular proliferation, nutrient utilization, and regenerative processes.

Why Researchers Choose IGF-1 LR3

IGF-1 LR3 is one of the most extensively studied anabolic research peptides due to its broad applications in muscle physiology, tissue regeneration, and recovery science. Researchers utilize IGF-1 LR3 to investigate improvements in lean body mass, exercise recovery, nutrient partitioning, muscle cell growth, and connective tissue repair. It is frequently incorporated into advanced performance and regeneration research protocols.

Product Highlights

  • Extended-acting Insulin-Like Growth Factor-1 analog
  • Supports muscle growth and regenerative medicine research
  • Investigated for protein synthesis and nutrient partitioning
  • High-purity lyophilized research-grade formulation
  • Third-party tested for identity and purity
  • Manufactured under strict quality standards

IGF-1 LR3 provides researchers with a powerful platform for investigating muscle hypertrophy, cellular regeneration, tissue repair, metabolic adaptation, and recovery through prolonged activation of the IGF-1 signaling pathway.

For Research Use Only. Not for human consumption.

Technical Specifications

Compound Information

Molecular Profile

What Is IGF-1 LR3 (Long R3 IGF-1)?

A modified analog of insulin-like growth factor 1 with an arginine substitution and a 13-residue N-terminal extension, engineered for increased potency and a longer half-life than native IGF-1.

Growth Factor PeptideIGF Analog
TypeInsulin-like growth factor analog
Molecular FormulaC400H625N111O115S9
Molecular Weight9117.6 g/mol
Amino Acids83
PubChem Database
Storage Requirements

Stability Information

Store frozen or refrigeratedProtect from lightReconstitute with bacteriostatic water or dilute acetic acid
-20°C
Lyophilized (powder)
stable long-term
2-8°C
Reconstituted
use within 1-2 weeks, avoid freeze-thaw cycles

Store lyophilized IGF-1 LR3 frozen for long-term stability. Once reconstituted, keep refrigerated, avoid repeated freeze-thaw cycles, and use within 1-2 weeks.