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

Receptor Grade IGF-1 LR3 (1mg) is a synthetic analog of human IGF-1 used in 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 IGF-binding proteins, making it roughly 3× more potent than regular IGF-1. China Grey Peptides provides lab-tested, high-purity IGF-1 LR3 (1mg) to researchers in the USA and worldwide. Each 1mg vial is batch-verified for purity and consistency, with a Certificate of Analysis for every batch.

What is Receptor Grade IGF-1 LR3 (1mg)?

• Analog Structure: IGF-1 LR3 (Long-R3 IGF-1) is an 83-amino-acid analog of insulin-like growth factor-1.
• Sequence Modification: It has an arginine substitution at position 3 and a 13-amino-acid N-terminal extension. These changes significantly lengthen its half-life and reduce binding to IGF binding proteins.
• Enhanced Potency: IGF-1 LR3 retains IGF-1 receptor binding but stays active much longer, enhancing its effectiveness in experiments.
• Anabolic Signaling: In research settings, IGF-1 LR3 triggers anabolic pathways (PI3K/Akt, MAPK) that promote protein synthesis, cell growth, and glucose uptake.

Research Applications of Receptor Grade IGF-1 LR3 (1mg)

• Muscle & Growth Studies: IGF-1 LR3 stimulates protein synthesis and cell proliferation. It is used to model muscle growth, recovery, and satellite cell activity in vitro and animal research.
• Metabolic & Anti-Aging Research: Improved glucose uptake and anti-myostatin effects make IGF-1 LR3 valuable in metabolism and aging studies.
• Cell Culture Supplement: Designed for cell culture, receptor-grade IGF-1 LR3 supports survival and proliferation at lower doses than standard IGF-1.
• Tissue Repair Models: Researchers also use IGF-1 LR3 to study wound healing and collagen production due to its regenerative effects.

High Purity & Quality Assurance

• Receptor Grade Purity: Our IGF-1 LR3 (1mg) is rated “Receptor Grade,” reflecting ≥99% purity by HPLC.
• Independent Testing: Each batch is validated by third-party HPLC and mass spectrometry.
• Certificate of Analysis: We provide a detailed COA for every vial, listing actual purity and peptide identity.
• Licensed Manufacturing: Made in GMP-like facilities, ensuring strict quality control and traceability.
• Detailed Documentation: We include lot numbers and storage data, so you know exactly what you receive.

Why Choose China Grey Peptides

• Licensed US Supplier: We are a licensed peptide manufacturer and distributor with a US presence.
• Fast USA Shipping: Orders are processed quickly, with same-day fulfillment from our USA warehouse.
• Global Distribution: We ship to the USA, Canada, UK, and Europe (research use only).
• Wholesale & Bulk Deals: Get competitive bulk pricing on large orders. We support research facilities and peptide resellers.
• Expert Support: Our team offers scientific and technical assistance – real people who understand peptides.
• Proven Reputation: Researchers rely on our transparency and consistency for critical studies.

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Shipping, Compliance & Storage

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

FAQ – IGF-1 LR3 (Receptor Grade, 1mg)

Q: What does "Receptor Grade" mean? A: “Receptor Grade” indicates top purity (usually ≥99%). It’s the highest-grade IGF-1 LR3 for research use. Our COAs verify this purity.

Q: How is IGF-1 LR3 purity confirmed? A: Each batch undergoes third-party HPLC and mass spec. The COA shows actual purity and peptide identity.

Q: Is IGF-1 LR3 legal to buy in the USA? A: Yes. IGF-1 LR3 is legal for research purposes. It’s not approved for medical or human use.

Q: Can I order in bulk? A: Absolutely. We offer wholesale pricing for qualified buyers. Check our Bulk Orders page or contact us for a custom quote.

Q: How fast is USA shipping? A: We process orders within 24–48 hours. Most US orders ship same-day (Mon–Fri).

Q: What support is provided? A: We provide full technical support, COAs, and documentation. Our peptide experts are available to answer your questions.

Order Receptor Grade IGF-1 LR3 (1mg) Today

Ensure your research uses the highest-quality peptide. Our Receptor Grade IGF-1 LR3 (1mg) delivers verified purity, clear documentation, and fast USA delivery. Order now or contact us for bulk pricing. Partner with a trusted peptide supplier and advance your research with confidence.