99%+ Purity
Guaranteed per batch
4.9 847 verified reviews
IGF-1 LR3
Total Price
$624.86
Discounted Price
$437.40
Vials
5 vials
You Save
$187.46
30% OFF
On Sale!
Retail Price
$597.54
Your Price
$597.54
Per vial: $42.58
You Save
$597.54
33% 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
4.9 847 verified reviews
IGF-1 LR3
Total Price
$624.86
Discounted Price
$437.40
Vials
5 vials
You Save
$187.46
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.
IGF-1 LR3 at a glance
| Sequence | MFPAMPLSSL FVNGPRTLCG AELVDALQFV CGDRGFYFNK PTGYGSSSRR APQTGIVDEC CFRSCDLRRL EMYCAPLKPA KSA |
|---|---|
| Molecular formula | C400H625N111O115S9 |
| Molecular weight | 9117.5 g/mol |
| CAS number | 946870-92-4 |
| Application | Research use only |
What is IGF-1 LR3?
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.
What has preclinical research reported?
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.
Extended Research Window
IGF-1 LR3 is used by researchers to study prolonged receptor interaction and downstream signaling in experimental systems.
IGF-1 Receptor Interaction
The compound is studied for its interaction with IGF-1 receptor pathways in controlled models.
Cell-Signaling Studies
Researchers use IGF-1 LR3 to analyze cell-signaling behavior, pathway activation, and assay response profiles.
Model Development
The peptide is used in experimental model development for laboratory research only.
Who publishes on IGF-1 LR3?
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.
References
- Hanaoka BY, Peterson CA, Horbinski C, Crofford LJ. Implications of glucocorticoid therapy in idiopathic inflammatory myopathies. Nat Rev Rheumatol. 2012 Aug;8(8):448-57. doi: 10.1038/nrrheum.2012.85. Epub 2012 Jun 12. PMID: 22688888. PMID 22688888
- Hadsell DL, Parlow AF, Torres D, George J, Olea W. Enhancement of maternal lactation performance during prolonged lactation in the mouse by mouse GH and long-R3-IGF-I is linked to changes in mammary signaling and gene expression. J Endocrinol. 2008 Jul;198(1):61-70. doi: 10.1677/JOE-07-0556. PMID: 18577570. PMID 18577570
For laboratory research use only. Products on this website are intended solely for in-vitro research. They are not medicines, have not been evaluated by the FDA, and are not intended to diagnose, treat, cure, or prevent any disease. Any administration to humans or animals is strictly prohibited.
What are these peptides made for?
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
All products are intended for research use only and are not for human or animal consumption, therapeutic use, or clinical application.
Why buy from Licensed Peptides
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.
For laboratory research use only. Not for human or veterinary use.
How orders ship
We understand that timing and product integrity are critical for research.
| Ships to | United States (including minor outlying islands) |
|---|---|
| Processing days | Monday to Friday, excluding holidays |
| Daily cut-off | Paid orders placed before 4:00 PM PST are typically shipped the same business day |
| Free shipping | FedEx 2-Day Express on orders over $200 and for VIP members |
| Standard | USPS Ground Advantage, 3–7 business days (not guaranteed) — $8.95 |
| Expedited | FedEx 2-Day $11.95 · UPS 2-Day $19.95 · FedEx Next Day $44.99 |
| Signature | Required on delivery for orders of $1,000 or more |
How orders are handled
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.
Tracking
Once your order has shipped you will receive a tracking number by email, so you can monitor delivery progress.
Shipped from the United States
Orders are dispatched domestically from a U.S.-based operation, so there are no international customs steps.
Delivery times
Shipping times are estimates and begin after order processing. Delays may occur due to carrier issues, weather, or other unforeseen factors, and delivery dates are not guaranteed. Full terms are in our Shipping & Delivery Policy.
For laboratory research use only. Not for human or veterinary use.
Additional information
| pack | 1 pack, 3 pack, 5 pack, 10 pack |
|---|
Storage conditions at a glance
| Lyophilized, in transit | Stable for shipping for up to 3–4 months |
|---|---|
| Lyophilized, short term | Room temperature is usually adequate for several weeks; refrigeration under 4°C (39°F) is generally acceptable |
| Lyophilized, long term | Freezer at -80°C (-112°F) for several months to years |
| After reconstitution | Refrigerated; stable for up to 30 days |
| Light and moisture | Keep cold and away from light in the original sealed vial |
Why the powder is stable
All of our products are manufactured using the lyophilization (freeze drying) process, which keeps them stable for shipping for up to 3–4 months.
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 it is reconstituted with bacteriostatic water.
Storing vials on arrival
Once peptides have been received, it is imperative that they are kept cold and away from light. If the peptides will be used in the next several days, weeks or months, short-term refrigeration under 4°C (39°F) 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.
For longer term storage (several months to years) it is more preferable to store peptides in a freezer at -80°C (-112°F). When storing peptides for months or even years, freezing is optimal in order to preserve the peptide’s stability.
After reconstitution
Once the peptides are reconstituted 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.
For laboratory research use only. Not for human or veterinary use.
99%+ — Passes ≥99% 
Download Full COA / HPLC Report (PDF) 
99%+ Every Batch
Often Not Disclosed
