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IGF-1 LR3

$139.99

This product is intended strictly for laboratory research and scientific investigation purposes only. IGF-1 LR3 is not approved for human or veterinary use. It is not intended for use as a drug, dietary supplement, cosmetic, or food product. All products are sold for research use only and must be handled by qualified professionals in controlled laboratory settings.

All products are independently tested in certified U.S. laboratories to confirm identity, purity, and safety.
Our peptides are verified to exceed 99% purity for consistent and dependable research results

$139.99

This product is intended strictly for laboratory research and scientific investigation purposes only. IGF-1 LR3 is not approved for human or veterinary use. It is not intended for use as a drug, dietary supplement, cosmetic, or food product. All products are sold for research use only and must be handled by qualified professionals in controlled laboratory settings.

Peace of Mind Guarantee

All products are independently tested in certified U.S. laboratories to confirm identity, purity, and safety.
Our peptides are verified to exceed 99% purity for consistent and dependable research results
Every order is processed and shipped within the United States to maintain quality and reliability.

Purchase Peptides

HCG

IGF-1 LR3 is a modified analog of insulin-like growth factor-1 engineered for use in controlled laboratory environments. This synthetic variant features an extended amino acid sequence that differentiates it structurally from endogenous IGF-1 and makes it a defined tool for investigative research.

West Peptides provides IGF-1 LR3 in a high-purity, lyophilized format suitable for analytical studies and experimental protocols requiring sequence-specific peptide materials.

Research Context

IGF-1 LR3 has been referenced in scientific literature examining peptide-receptor interactions and downstream signaling activity. In preclinical and laboratory models, researchers use defined IGF variants to better understand receptor binding dynamics, pathway modulation, and molecular response behavior under controlled conditions.

Because this peptide includes structural modifications relative to naturally occurring IGF-1, it is often selected in experimental designs where distinct receptor engagement characteristics are being evaluated.

Product Overview

This product is supplied as a white lyophilized powder to support stability and precise preparation. Lyophilization preserves structural integrity and allows researchers to reconstitute the peptide using appropriate sterile solvents within laboratory settings.

IGF-1 LR3 is commonly incorporated into research workflows where defined peptide fragments are used to investigate cellular signaling systems and controlled molecular response pathways.

Molecular Profile

Peptide Classification: Modified IGF analog
Form: White lyophilized powder
Purity Standard: High analytical grade
Stability: Suitable for storage under recommended laboratory conditions

Each batch is verified for composition and purity to support reproducibility and consistency in research applications.

Research Applications

IGF-1 LR3 may be utilized in laboratory environments for:

  • Preparation of analytical peptide solutions
    • Investigation of receptor-mediated signaling mechanisms
    • Comparative studies involving peptide variants
    • Controlled experimental exploration of molecular interaction systems

These applications reflect structured research contexts where defined peptide materials are required.

Key Features

Defined Structural Variant
Manufactured with a modified amino acid sequence used in scientific research.

High Purity Verification
Batch-tested to ensure consistent composition and analytical reliability.

Lyophilized for Controlled Preparation
Freeze-dried format supports stability and standardized reconstitution.

Packaged for Research Environments
Delivered in secure vials appropriate for qualified laboratory handling.

Frequently Asked Questions

What is IGF-1 LR3?
IGF-1 LR3 is a synthetic variant of insulin-like growth factor-1 that includes structural modifications and is referenced in research involving receptor signaling pathways.

Why do researchers use IGF-1 LR3 instead of native IGF-1?
Modified analogs are often selected in research to evaluate differences in receptor interaction and molecular behavior under controlled conditions.

Referenced Citations

Philippou A, Halapas A, Maridaki M, Koutsilieris M. Type I insulin-like growth factor receptor signaling in skeletal muscle regeneration and hypertrophy. J Musculoskelet Neuronal Interact. 2007 Jul-Sep;7(3):208-18. PMID: 17947802.

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.

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. 

Compliance Notice

This product is intended strictly for laboratory research and scientific investigation purposes only. IGF-1 LR3 is not approved for human or veterinary use. It is not intended for use as a drug, dietary supplement, cosmetic, or food product. All products are sold for research use only and must be handled by qualified professionals in controlled laboratory settings.

Our products are produced using a freeze-drying process (lyophilization), which helps maintain their integrity and stability during transit, typically for up to 3–4 months.

After the peptides are reconstituted (mixed with bacteriostatic water), they should be kept refrigerated to preserve their quality. Once in liquid form, they generally remain stable for up to 30 days when stored properly.

Lyophilization—also referred to as cryodesiccation—is a dehydration method where the material is first frozen and then exposed to low pressure. This allows moisture to transition directly from solid to vapor, leaving behind a dry, stable compound in the form of a light, crystalline powder. In this state, the product can be kept at room temperature until it is ready to be reconstituted.

Upon receiving your peptides, it is recommended to protect them from heat and light exposure. For short-term use (ranging from a few days to several weeks), refrigeration below 4°C (39°F) is suitable. Lyophilized products can also tolerate room temperature storage for a limited period if they will be used relatively soon.

For extended storage—spanning several months or longer—freezing is advised. Ideally, peptides should be kept at approximately -80°C (-112°F) to best maintain long-term stability

From Synthesis to Delivery

The Peptide Manufacturing
Process — 9 Steps

A precision-driven journey from pharma-grade raw materials to your doorstep, ensuring the highest purity, stability, and quality at every stage.

01 Phase 1 — Synthesis
Step 01
Pharma-Grade Raw Materials
Every peptide begins with high-purity, pharma-grade amino acid building blocks sourced from trusted suppliers. Using premium raw materials ensures the synthesis process starts with the highest possible quality foundation.
01
Step 02
Precision Peptide Chain Assembly (SPPS)
Peptides are constructed using Solid Phase Peptide Synthesis (SPPS), where amino acids are sequentially added to a resin-bound chain. This controlled process allows precise formation of the peptide sequence with high accuracy.
02
Step 03
Controlled Resin Cleavage
Once synthesis is complete, the finished peptide chain is carefully separated from the solid resin support. This controlled cleavage step releases the peptide while preserving structural integrity.
03
Step 04
Primary Peptide Recovery
The crude peptide is isolated from the reaction mixture and collected. This stage removes bulk reaction solvents and prepares the material for advanced purification.
04
02 Phase 2 — Purification & Testing
Step 05
Advanced HPLC Purification
High-Performance Liquid Chromatography (HPLC) is used to separate the target peptide from impurities and incomplete fragments. This purification step ensures high peptide purity and consistency.
05
Step 06
Analytical Identity & Purity Verification
Each batch undergoes analytical testing such as HPLC and mass spectrometry to confirm molecular identity and verify purity levels before proceeding to the final stages.
06
03 Phase 3 — Stability & Delivery
Step 07
Stability-Preserving Lyophilization
The purified peptide solution is freeze-dried (lyophilized) into a stable powder form. This process improves shelf life, preserves molecular structure, and allows long-term storage.
07
Step 08
Sterile Vialing & Medical-Grade Storage
Peptides are filled into sterile laboratory vials and stored under controlled low-temperature conditions to maintain stability, purity, and product integrity.
08
Step 09
Express US Shipping (2–3 Days)
Orders are securely packaged and shipped through trusted domestic carriers, ensuring fast and reliable delivery across the United States within 2–3 business days.
09

Research Use Only

All products on this site are for research and development use only. Products are not for human consumption of any kind. The statements made on this website have not been evaluated by the US Food and Drug Administration. The statements and the products of this company are not intended to diagnose, treat, cure, or prevent any disease.
West Peptides is a chemical supplier. West Peptides is not a compounding pharmacy or chemical compounding facility as defined under 503A of the Federal Food, Drug, and Cosmetic Act. West Peptides not an outsourcing facility as defined under 503B of the Federal Food, Drug, and Cosmetic Act.
All products are sold for research, laboratory, or analytical purposes only, and are not for human consumption.
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