{"product_id":"receptor-grade-igf-1-lr3-1mg","title":"Receptor Grade IGF-1 LR3 (1mg)","description":"\u003ch1 id=\"receptor-grade-igf-1-lr3-1mg--lab-tested-research-peptide\" class=\"text-token-text-primary scroll-mt-24 text-[20pt] leading-[1.25] font-semibold\"\u003eReceptor Grade IGF-1 LR3 (1mg) – Lab-Tested Research Peptide\u003c\/h1\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003eReceptor 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.\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 Receptor Grade IGF-1 LR3 (1mg)?\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.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eSequence Modification:\u003c\/strong\u003e 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.\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 stays active much longer, enhancing its effectiveness in experiments.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eAnabolic Signaling:\u003c\/strong\u003e In research settings, IGF-1 LR3 triggers anabolic pathways (PI3K\/Akt, MAPK) that promote protein synthesis, cell growth, and glucose uptake.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2 id=\"research-applications-of-igf-1-lr3-1mg\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eResearch Applications of Receptor Grade IGF-1 LR3 (1mg)\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; Growth Studies:\u003c\/strong\u003e 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.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eMetabolic \u0026amp; Anti-Aging Research:\u003c\/strong\u003e Improved glucose uptake and anti-myostatin effects make IGF-1 LR3 valuable in metabolism and aging studies.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eCell Culture Supplement:\u003c\/strong\u003e Designed for cell culture, receptor-grade IGF-1 LR3 supports survival and proliferation at lower doses than standard IGF-1.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eTissue Repair Models:\u003c\/strong\u003e Researchers also use IGF-1 LR3 to study wound healing and collagen production due to its regenerative effects.\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 (1mg) is rated “Receptor Grade,” reflecting ≥99% purity by HPLC.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eIndependent Testing:\u003c\/strong\u003e Each batch is validated by third-party 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 detailed COA for every vial, listing actual purity and peptide identity.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eLicensed Manufacturing:\u003c\/strong\u003e Made in GMP-like facilities, ensuring strict quality control and traceability.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eDetailed Documentation:\u003c\/strong\u003e We include lot numbers and storage data, so you know exactly what you receive.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2 id=\"why-choose-china-grey-peptides\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eWhy Choose 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 US Supplier:\u003c\/strong\u003e We are a licensed peptide manufacturer and distributor with a US presence.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eFast USA Shipping:\u003c\/strong\u003e Orders are processed quickly, with same-day fulfillment from our USA warehouse.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eGlobal Distribution:\u003c\/strong\u003e We ship to the USA, Canada, UK, and Europe (research use only).\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eWholesale \u0026amp; Bulk Deals:\u003c\/strong\u003e Get competitive bulk pricing on large orders. We support research facilities and peptide resellers.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eExpert Support:\u003c\/strong\u003e Our team offers scientific and technical assistance – real people who understand peptides.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eProven Reputation:\u003c\/strong\u003e Researchers rely on our transparency and consistency for critical studies.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003ca href=\"https:\/\/chinagreypeptidescompany.com\/bulk-orders\/\"\u003eInternal Link Suggestion: Link to our \u003cstrong\u003eShop\u003c\/strong\u003e page (Peptides for Sale)\u003c\/a\u003e\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\u003eShipping Destinations:\u003c\/strong\u003e USA (primary market), Canada, UK, Europe.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eSecure Packaging:\u003c\/strong\u003e Discreet, temperature-controlled shipping protects peptide integrity.\u003c\/li\u003e\r\n \t\u003cli class=\"text-token-text-primary leading-relaxed\"\u003e\n\u003cstrong\u003eResearch-Only Compliance:\u003c\/strong\u003e All products are labeled “For Research Use Only.” Not intended for human 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 prior to use.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2 id=\"faq--igf-1-lr3-receptor-grade-1mg\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eFAQ – IGF-1 LR3 (Receptor Grade, 1mg)\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: “Receptor Grade” indicates top purity (usually ≥99%). It’s the highest-grade IGF-1 LR3 for research use. Our COAs verify this purity.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: How is IGF-1 LR3 purity confirmed?\u003c\/strong\u003e\r\nA: Each batch undergoes third-party HPLC and mass spec. The COA shows actual purity and peptide identity.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: Is IGF-1 LR3 legal to buy in the USA?\u003c\/strong\u003e\r\nA: Yes. IGF-1 LR3 is legal for research purposes. It’s not approved for medical or human use.\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: Absolutely. We offer wholesale pricing for qualified buyers. Check our Bulk Orders page or contact us for a custom quote.\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: How fast is USA shipping?\u003c\/strong\u003e\r\nA: We process orders within 24–48 hours. Most US orders ship same-day (Mon–Fri).\u003c\/p\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003e\u003cstrong\u003eQ: What support is provided?\u003c\/strong\u003e\r\nA: We provide full technical support, COAs, and documentation. Our peptide experts are available to answer your questions.\u003c\/p\u003e\r\n\r\n\u003ch2 id=\"order-receptor-grade-igf-1-lr3-1mg-today\" class=\"text-token-text-primary scroll-mt-24 text-[16pt] leading-[1.3] font-semibold\"\u003eOrder Receptor Grade IGF-1 LR3 (1mg) Today\u003c\/h2\u003e\r\n\u003cp class=\"text-token-text-primary leading-relaxed\"\u003eEnsure your research uses the highest-quality peptide. Our \u003cstrong\u003eReceptor Grade IGF-1 LR3 (1mg)\u003c\/strong\u003e 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.\u003c\/p\u003e","brand":"My Store 2","offers":[{"title":"Default Title","offer_id":54149444468847,"sku":null,"price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/7431\/4095\/files\/ab0c8e28-WhatsApp-Image-2026-03-13-at-10.24.56-AM.jpg?v=1787854620","url":"https:\/\/eriodspeptides.com\/products\/receptor-grade-igf-1-lr3-1mg","provider":"eriodspeptides.com ","version":"1.0","type":"link"}