Receptor Grade IGF-1 LR3 (100mcg) – Lab-Tested Research Peptide

Receptor Grade IGF-1 LR3 (100mcg) is a synthetic analog of human IGF-1 used in advanced research. Modified with a 13-amino-acid extension, IGF-1 LR3 lasts 20–30 hours in the body – far longer than native IGF-1. This receptor-grade peptide binds the IGF-1 receptor with normal affinity but evades most binding proteins (IGFBPs), making it roughly three times more potent than regular IGF-1.

China Grey Peptides provides lab-tested, high-purity IGF-1 LR3 (100mcg) to researchers in the USA and worldwide. Each 100mcg vial is batch-verified for purity and consistency, with a detailed Certificate of Analysis for every lot.

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

• Analog Structure: IGF-1 LR3 (Long-R3 IGF-1) is an 83-amino-acid analog of insulin-like growth factor-1. It has an arginine substitution at position 3 and a 13-amino-acid N-terminal extension.
• Extended Activity: These modifications significantly lengthen its half-life and reduce binding to IGF binding proteins.
• Enhanced Potency: IGF-1 LR3 retains IGF-1 receptor binding but circulates much longer, enhancing its effect in experiments.
• Signaling Pathways: In cells, IGF-1 LR3 triggers anabolic signaling (PI3K/Akt, MAPK) that boosts protein synthesis, cell growth, and nutrient uptake.

Research Uses and Benefits of Receptor Grade IGF-1 LR3 (100mcg)

• Muscle & Tissue Studies: IGF-1 LR3 stimulates muscle protein synthesis and cell proliferation, making it ideal for muscle growth and repair studies.
• Metabolic Research: Studies show IGF-1 LR3 can significantly increase glucose uptake in muscle/adipose cells, valuable for metabolism research.
• Cell Culture Supplement: As a high-potency analog, IGF-1 LR3 supports stronger cell growth at lower doses than standard IGF-1.
• Anti-Aging Models: Its role in cellular regeneration and collagen support makes IGF-1 LR3 useful in aging and regenerative studies.
• Growth Factor Research: Researchers use this peptide to study IGF receptor signaling pathways and growth factor interactions.

High Purity & Quality Assurance

• Receptor Grade Purity: Our IGF-1 LR3 (100mcg) is rated “Receptor Grade,” meaning ≥99% purity by HPLC.
• Third-Party Testing: Each batch is validated by independent HPLC and mass spectrometry.
• Certificate of Analysis: We provide a COA for every vial, showing actual purity and identity.
• Licensed Manufacturing: Produced under GMP-like conditions with strict quality controls.
• Transparency: We supply batch records and testing data so you know exactly what you receive.

Why China Grey Peptides?

• Licensed U.S. Supplier: We are a legitimate, licensed peptide manufacturer and distributor serving US researchers.
• Fast USA & Global Shipping: Same-day fulfillment from our US warehouse with secure shipping to the USA, Canada, UK, and Europe.
• Wholesale & Bulk Pricing: Competitive discounts for large orders and institutional buyers. Contact us for details.
• Expert Support: Real scientific support – our team answers your questions and provides guidance, not bots.
• Trusted Reputation: Our transparency, testing standards, and repeat customers speak for our reliability.

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Shipping, Compliance & Storage

• Destinations: USA (primary market), Canada, UK, Europe (research use only).
• Packaging: Discreet, temperature-controlled packaging protects peptide integrity.
• Research-Only: All products are labeled “For Research Use Only.” Not for medical or veterinary use.
• Storage: Store lyophilized IGF-1 LR3 at -20°C. Reconstitute in sterile, cold bacteriostatic water before use.

FAQ – Receptor Grade IGF-1 LR3 (100mcg)

Q: What does “Receptor Grade” mean?
A: It indicates the highest purity (≥99%). Receptor Grade IGF-1 LR3 is more pure than standard research grade, offering consistent potency. Our COAs verify this purity.

Q: How is purity verified?
A: Each batch undergoes independent HPLC and mass spec. The COA includes the purity percentage (typically 99%+) and confirms the peptide’s identity.

Q: Is IGF-1 LR3 legal to buy?
A: Yes. IGF-1 LR3 is legal for laboratory research use in the USA. It is not FDA-approved for medical applications.

Q: Can I order in bulk?
A: Yes. We offer bulk quantities and wholesale pricing for qualified buyers. Please visit our Bulk Orders page or contact us for details.

Q: What is shelf life?
A: When stored properly at -20°C, IGF-1 LR3 (100mcg) is stable for months. Avoid repeated freeze-thaw cycles after reconstituting.

Order Receptor Grade IGF-1 LR3 (100mcg) Today

Trust your research to proven quality. Our Receptor Grade IGF-1 LR3 (100mcg) delivers verified 99%+ purity and robust performance. With fast USA shipping and transparent documentation, China Grey Peptides makes your peptide purchase reliable. Order now or contact us for bulk pricing – partner with a licensed peptide supplier that puts quality first.