{"product_id":"receptor-grade-igf-1-lr3-100mcg","title":"Receptor Grade IGF-1 LR3 (100mcg)","description":"\u003ch1 id=\"receptor-grade-igf-1-lr3-100mcg--lab-tested-research-peptide\" class=\"text-token-text-primary scroll-mt-24 text-[20pt] leading-[1.25] font-semibold\"\u003eReceptor Grade IGF-1 LR3 (100mcg) – Lab-Tested Research Peptide\u003c\/h1\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003eReceptor 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.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003eChina 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.\u003c\/p\u003e\r\n\r\n\u003ch2 id=\"what-is-igf-1-lr3-long-r3-igf-1\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eWhat is IGF-1 LR3 (Long-R3 IGF-1)?\u003c\/h2\u003e\r\n\u003cul class=\"text-token-text-primary ml-3 list-disc space-y-2 leading-relaxed\"\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eAnalog Structure:\u003c\/strong\u003e 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.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eExtended Activity:\u003c\/strong\u003e These modifications significantly lengthen its half-life and reduce binding to IGF binding proteins.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eEnhanced Potency:\u003c\/strong\u003e IGF-1 LR3 retains IGF-1 receptor binding but circulates much longer, enhancing its effect in experiments.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eSignaling Pathways:\u003c\/strong\u003e In cells, IGF-1 LR3 triggers anabolic signaling (PI3K\/Akt, MAPK) that boosts protein synthesis, cell growth, and nutrient uptake.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2 id=\"research-uses-and-benefits\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eResearch Uses and Benefits of Receptor Grade IGF-1 LR3 (100mcg)\u003c\/h2\u003e\r\n\u003cul class=\"text-token-text-primary ml-3 list-disc space-y-2 leading-relaxed\"\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eMuscle \u0026amp; Tissue Studies:\u003c\/strong\u003e IGF-1 LR3 stimulates muscle protein synthesis and cell proliferation, making it ideal for muscle growth and repair studies.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eMetabolic Research:\u003c\/strong\u003e Studies show IGF-1 LR3 can significantly increase glucose uptake in muscle\/adipose cells, valuable for metabolism research.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eCell Culture Supplement:\u003c\/strong\u003e As a high-potency analog, IGF-1 LR3 supports stronger cell growth at lower doses than standard IGF-1.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eAnti-Aging Models:\u003c\/strong\u003e Its role in cellular regeneration and collagen support makes IGF-1 LR3 useful in aging and regenerative studies.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eGrowth Factor Research:\u003c\/strong\u003e Researchers use this peptide to study IGF receptor signaling pathways and growth factor interactions.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2 id=\"high-purity--quality-assurance\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eHigh Purity \u0026amp; Quality Assurance\u003c\/h2\u003e\r\n\u003cul class=\"text-token-text-primary ml-3 list-disc space-y-2 leading-relaxed\"\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eReceptor Grade Purity:\u003c\/strong\u003e Our IGF-1 LR3 (100mcg) is rated “Receptor Grade,” meaning ≥99% purity by HPLC.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eThird-Party Testing:\u003c\/strong\u003e Each batch is validated by independent HPLC and mass spectrometry.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eCertificate of Analysis:\u003c\/strong\u003e We provide a COA for every vial, showing actual purity and identity.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eLicensed Manufacturing:\u003c\/strong\u003e Produced under GMP-like conditions with strict quality controls.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eTransparency:\u003c\/strong\u003e We supply batch records and testing data so you know exactly what you receive.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2 id=\"why-china-grey-peptides\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eWhy China Grey Peptides?\u003c\/h2\u003e\r\n\u003cul class=\"text-token-text-primary ml-3 list-disc space-y-2 leading-relaxed\"\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eLicensed U.S. Supplier:\u003c\/strong\u003e We are a legitimate, licensed peptide manufacturer and distributor serving US researchers.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eFast USA \u0026amp; Global Shipping:\u003c\/strong\u003e Same-day fulfillment from our US warehouse with secure shipping to the USA, Canada, UK, and Europe.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eWholesale \u0026amp; Bulk Pricing:\u003c\/strong\u003e Competitive discounts for large orders and institutional buyers. Contact us for details.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eExpert Support:\u003c\/strong\u003e Real scientific support – our team answers your questions and provides guidance, not bots.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eTrusted Reputation:\u003c\/strong\u003e Our transparency, testing standards, and repeat customers speak for our reliability.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003ehttps:\/\/chinagreypeptidescompany.com\/shop\/\r\n\u003ca href=\"https:\/\/chinagreypeptidescompany.com\/bulk-orders\/\"\u003eInternal Link Suggestion: Link to our \u003cstrong\u003eBulk Orders\u003c\/strong\u003e page\u003c\/a\u003e\u003c\/p\u003e\r\n\r\n\u003ch2 id=\"shipping-compliance--storage\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eShipping, Compliance \u0026amp; Storage\u003c\/h2\u003e\r\n\u003cul class=\"text-token-text-primary ml-3 list-disc space-y-2 leading-relaxed\"\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eDestinations:\u003c\/strong\u003e USA (primary market), Canada, UK, Europe (research use only).\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Discreet, temperature-controlled packaging protects peptide integrity.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eResearch-Only:\u003c\/strong\u003e All products are labeled “For Research Use Only.” Not for medical or veterinary use.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Store lyophilized IGF-1 LR3 at -20°C. Reconstitute in sterile, cold bacteriostatic water before use.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2 id=\"faq--igf-1-lr3-receptor-grade-100mcg\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eFAQ – Receptor Grade IGF-1 LR3 (100mcg)\u003c\/h2\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: What does “Receptor Grade” mean?\u003c\/strong\u003e\r\nA: 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.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: How is purity verified?\u003c\/strong\u003e\r\nA: Each batch undergoes independent HPLC and mass spec. The COA includes the purity percentage (typically 99%+) and confirms the peptide’s identity.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: Is IGF-1 LR3 legal to buy?\u003c\/strong\u003e\r\nA: Yes. IGF-1 LR3 is legal for laboratory research use in the USA. It is not FDA-approved for medical applications.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: Can I order in bulk?\u003c\/strong\u003e\r\nA: Yes. We offer bulk quantities and wholesale pricing for qualified buyers. Please visit our Bulk Orders page or contact us for details.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: What is shelf life?\u003c\/strong\u003e\r\nA: When stored properly at -20°C, IGF-1 LR3 (100mcg) is stable for months. Avoid repeated freeze-thaw cycles after reconstituting.\u003c\/p\u003e\r\n\r\n\u003ch2 id=\"order-receptor-grade-igf-1-lr3-100mcg-today\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eOrder Receptor Grade IGF-1 LR3 (100mcg) Today\u003c\/h2\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003eTrust your research to proven quality. Our \u003cstrong\u003eReceptor Grade IGF-1 LR3 (100mcg)\u003c\/strong\u003e delivers verified 99%+ purity and robust performance. With fast USA shipping and transparent documentation, China Grey Peptides makes your peptide purchase reliable. \u003cstrong\u003eOrder now\u003c\/strong\u003e or contact us for bulk pricing – partner with a licensed peptide supplier that puts quality first.\u003c\/p\u003e","brand":"My Store 2","offers":[{"title":"Default Title","offer_id":54149444501615,"sku":null,"price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/7431\/4095\/files\/abc6692e-WhatsApp-Image-2026-03-13-at-10.24.56-AM-2.jpg?v=1787854620","url":"https:\/\/eriodspeptides.com\/products\/receptor-grade-igf-1-lr3-100mcg","provider":"eriodspeptides.com ","version":"1.0","type":"link"}