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IGF-1 LR3
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99% HPLC Purity
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99%+ HPLC Purity — Independently verified by accredited US laboratory -
Endotoxin-Screened — LAL tested, LPS-free, endotoxin report available
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GMP-Certified Manufacturing — USA facility, ISO 9001:2015
-
Lyophilized for Stability — Shipped cold-packed, intact for reconstitution
Molecular Weight
Third Party Tested
APPLICATION
For Research Use only
Form
Lyophilized Powder
Storage
-20°C Long Term
Purity (HPLC)
99%+ Third Party Verified
Manufacture
USA / GMP
4.9 847 verified reviews
IGF-1 LR3
Total Price
$229.93
Discounted Price
$160.95
Vials
5 vials
You Save
$68.98
30% OFF
Select Strength (mg)
99% HPLC Purity
Select Vials
Bulk pricing applied
📈 Upgrade to 10 vials and save an extra vs. buying 5 — nearly 3 free vials.
Select Purchase Option:
-
99%+ HPLC Purity —
Independently verified by accredited US laboratory
-
Endotoxin-Screened —
LAL tested, LPS-free, endotoxin report available
-
GMP-Certified Manufacturing —
USA facility, ISO 9001:2015
-
Lyophilized for Stability —
Shipped cold-packed, intact for reconstitution
Molecular Weight
Third Party Tested
APPLICATION
For Research Use only
Form
Lyophilized Powder
Storage
-20°C Long Term
Purity (HPLC)
99%+ Third Party Verified
Manufacture
USA / GMP
IGF-1 LR3 is a synthetic, laboratory-engineered analog of IGF-1 used in controlled research to study receptor interaction, peptide stability, and downstream signaling behavior in experimental systems. This product is supplied strictly for research use only. It is not approved or intended for human or animal use, and any discussion of biological activity refers only to preclinical or in vitro research.
This increased bio-availability allows research teams to explore extended cellular signaling events without the rapid degradation typically observed with standard IGF-1. Its stability profile and functional responsiveness have made IGF-1 LR3 a widely utilized peptide in scientific studies focusing on metabolic behavior, protein synthesis pathways, and tissue-repair models.
Formulated at 100mcg, IGF-1 LR3 provides laboratories with a flexible and practical quantity for diverse experimental setups, including in-vitro cellular assays, mechanistic pathway investigations, and stress-response modeling. Because the Long R3 form interacts more freely with IGF-1 receptors, with minimal interference from IGFBPs, it is valued in studies examining growth-factor signaling cascades, metabolic responses, and regenerative mechanisms.
This product is manufactured to high purity standards and is produced as an LPS-free peptide and endotoxin-free peptide, ensuring minimal background interference in sensitive experimental conditions. All research peptides are endotoxin tested to support reproducibility, consistency, and reliability across laboratory studies.
For Research Use Only. Not for Human or Animal Use. This product is intended solely for laboratory research and investigational purposes and is not approved for diagnostic, therapeutic, or consumptive applications.
Research-Grade Overview (Not for Human or Animal Use)
IGF-1 LR3 is a laboratory research material used to examine IGF-1 receptor binding, peptide kinetics, and signaling behavior in controlled experimental models. References to biological effects are provided for scientific context only and must not be interpreted as claims of therapeutic, diagnostic, or clinical benefit. This product is not offered for human or veterinary use.
IGF-1 LR3 : Structure
Sequence: MFPAMPLSSL FVNGPRTLCG AELVDALQFV CGDRGFYFNK PTGYGSSSRR APQTGIVDEC CFRSCDLRRL EMYCAPLKPA KSA
Molecular Formula: C400H625N111O115S9
Molecular Weight: 9117.5 g/mol
CAS Number: 946870-92-4
Source: PubChem
Research Applications and Scientific Relevance
IGF-1 LR3 may be used in laboratory studies involving:
- receptor-binding research
- peptide stability studies
- signaling-pathway analysis
- assay development
- cell-model research
- protein-synthesis pathway analysis
- metabolic-pathway modeling
All uses are limited to research settings only. This product is not intended for diagnosis, treatment, prevention, or consumption.
Key Research-Based Attributes of IGF-1 LR3 (Not for Human or Animal Use)
The attributes listed below reflect observations from controlled laboratory studies only. They must not be interpreted as benefits for humans or animals.
1. Extended Research Window
IGF-1 LR3 is used by researchers to study prolonged receptor interaction and downstream signaling in experimental systems.
2. IGF-1 Receptor Interaction
The compound is studied for its interaction with IGF-1 receptor pathways in controlled models.
3. Cell-Signaling Studies
Researchers use IGF-1 LR3 to analyze cell-signaling behavior, pathway activation, and assay response profiles.
4. Model Development
The peptide is used in experimental model development for laboratory research only.
Why Choose Licensed Peptides for IGF-1 LR3 100mcg?
Licensed Peptides supplies research-grade IGF-1 LR3 for laboratory use only. Products are intended solely for analytical, in vitro, ex vivo, or other controlled research applications. This material is not approved for human or animal use and is not offered as a therapeutic, diagnostic, or clinical product.
Advantages for Research Teams:
- Consistent Purity and Laboratory-Grade Quality
- Secure and Efficient Ordering through a protected online system
- Professional Packaging that preserves stability during transit
- Prompt Fulfillment so research workflows remain uninterrupted
All materials are intended exclusively for laboratory research. Not for human or animal consumption.
Frequently Asked Questions (Research-Only Use)
Below is an expanded FAQ section containing more than 10 questions, all reframed entirely toward non-human research applications.
1. What is IGF-1 LR3?
IGF-1 LR3 is a modified IGF-1 analog used in laboratory research to study receptor signaling and peptide behavior.
2. What types of research use it?
It is used in cell signaling, receptor-binding, and assay-development studies.
3. Is it intended for human or animal use?
No. It is supplied strictly for research use only.
4. Does this page describe therapeutic effects?
No. Any discussion on this page is limited to research context only and does not imply therapeutic, diagnostic, or clinical benefit.
5. Is IGF-1 LR3 100 mcg suitable for sensitive cellular assays?
Yes. This IGF-1 LR3 formulation is a high-purity, LPS-free peptide and is endotoxin-free, making it appropriate for use in sensitive in-vitro research environments where endotoxin contamination could affect experimental outcomes.
6. How is endotoxin control ensured for this research peptide?
All batches of IGF-1 LR3 100 mcg are research peptides endotoxin tested to verify low endotoxin levels, supporting consistency and minimizing unwanted immune or inflammatory responses in experimental systems.
7. Why is the LPS-free and endotoxin-free status important for IGF-1 LR3 studies?
Using an LPS-free, endotoxin-free peptide helps reduce confounding variables in growth-factor signaling, receptor-binding, and metabolic pathway studies, allowing observed effects to be attributed more accurately to IGF-1 LR3 activity rather than contaminants.
IGF-1 LR3 : Scientific Journal & Authors
Dr. Anastasios Philippou, Ph.D. specialized in Experimental Physiology at the National and Kapodistrian University of Athens Medical School. Currently serving as a National Center Manager and Assistant Professor, his research has extensively explored muscle regeneration and the role of insulin-like growth factor 1 (IGF-1) in skeletal muscle physiology. His work has focused on the expression of IGF-1 isoforms following exercise-induced muscle damage, the functional characterization of the mechano-growth factor (MGF E peptide) in vitro, and the epigenetic regulation of gene expression in response to physical activity. Collectively, his contributions provide important insights into the molecular and physiological mechanisms underlying muscle adaptation and repair.
Referenced Citations
ALL ARTICLES AND PRODUCT INFORMATION PROVIDED ON THIS WEBSITE ARE FOR INFORMATIONAL AND EDUCATIONAL PURPOSES ONLY.
The products available on this website are intended solely for in-vitro research purposes (Latin: “in glass”), meaning they are used in experiments conducted outside a living organism. These products are not medicines or drugs, have not been evaluated or approved by the U.S. Food and Drug Administration (FDA), and are not intended to diagnose, treat, cure, or prevent any disease or medical condition. Any administration to humans or animals, whether by ingestion, injection, or other means, is strictly prohibited by law.
Research
Our peptides are produced exclusively for laboratory and scientific research purposes.
Licensed Peptides™ products are developed using industry-standard synthesis and purification protocols, making them suitable for in vitro research, analytical testing, and experimental models.
Research-Grade Standards
- Synthesized via Solid Phase Peptide Synthesis (SPPS)
- Purified using advanced HPLC methods
- Verified through analytical quality control processes
- Screened for heavy metals and endotoxins
Consistency Across Batches
Strict process controls ensure reproducibility, allowing researchers to work with confidence across experiments.
Applications
Our peptides are commonly used in research involving:
- Cellular signaling pathways
- Tissue remodeling and repair mechanisms
- Extracellular matrix regulation
- Molecular biology and biochemical studies
Important Notice
All products are intended for research use only and are not for human or animal consumption, therapeutic use, or clinical application.
Why Buy From Us
At Licensed Peptides™, quality isn’t a claim. it’s a controlled, repeatable process.
Every peptide we produce follows a strict, pharma-grade workflow designed to ensure purity, stability, and consistency from synthesis to delivery.
What sets us apart:
ISO-Certified Cleanroom Manufacturing
All peptides are synthesized in sterile, controlled environments to eliminate contamination risk and ensure batch consistency.
>99% Verified Purity (HPLC Tested)
We use advanced High-Performance Liquid Chromatography (HPLC) to separate and verify peptide purity with precision.
Comprehensive Safety Testing
Each batch undergoes heavy metal and endotoxin screening to ensure it is free from hidden contaminants.
Pharma-Grade Raw Materials
We start with rigorously tested amino acids and reagents, ensuring integrity at the molecular level.
Lyophilized for Stability
Freeze-dried peptides maintain long-term stability, potency, and reliability for research applications.
Nitrogen-Sealed Vials
Every vial is protected from oxygen and moisture, preserving structural integrity during storage and transit.
Built for Serious Research
From synthesis to delivery, every step is engineered to meet the expectations of professionals who require accuracy, consistency, and reliability.
Shipping
We understand that timing and product integrity are critical for research.
Same-Day Shipping (USA)
All in-stock orders placed before our daily cutoff are shipped the same day from within the United States.
Fast Domestic Delivery (1–3 Days)
We use expedited carriers to ensure your peptides arrive quickly and reliably nationwide.
Cold Chain Protection
Products are stored in industrial-grade freezers prior to shipment to maintain stability and purity.
Secure & Protective Packaging
Each order is carefully packed to protect against temperature fluctuations, moisture exposure, and physical damage during transit.
Real-Time Tracking
You’ll receive tracking information immediately upon shipment so you can monitor delivery progress.
Consistency You Can Rely On
No long international delays, no customs issues. Just fast, dependable delivery from a U.S.-based operation.
Additional information
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Storage Instructions:
All of our products are manufactured using the Lyophilization (Freeze Drying) process, which ensures that our products remain 100% stable for shipping for up to 3-4 months.
Once the peptides are reconstituted (mixed with bacteriostatic water), they must be stored in the fridge to maintain stability. After reconstitution, the peptides will remain stable for up to 30 days.
Lyophilization is a unique dehydration process, also known as cryodesiccation, where the peptides are frozen and then subjected to low pressure. This causes the water in the peptide vial to sublimate directly from solid to gas, leaving behind a stable, crystalline white structure known as lyophilized peptide. The puffy white powder can be stored at room temperature until you’re ready to reconstitute it with bacteriostatic water.
Once peptides have been received, it is imperative that they are kept cold and away from light. If the peptides will be used immediately, or in the next several days, weeks or months, short-term refrigeration under 4C (39F) is generally acceptable. Lyophilized peptides are usually stable at room temperatures for several weeks or more, so if they will be utilized within weeks or months such storage is typically adequate.
However, for longer term storage (several months to years) it is more preferable to store peptides in a freezer at -80C (-112F). When storing peptides for months or even years, freezing is optimal in order to preserve the peptide’s stability.
For further information on proper storage techniques, click the link below:
Peptide Storage
99%+ — Passes ≥99% 
Download Full COA / HPLC Report (PDF) 
99%+ Every Batch
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