{"id":946,"date":"2026-05-25T03:50:07","date_gmt":"2026-05-25T03:50:07","guid":{"rendered":"https:\/\/wuhantopmiraclepeptides.com\/?post_type=product&#038;p=946"},"modified":"2026-06-17T03:32:10","modified_gmt":"2026-06-17T03:32:10","slug":"receptor-grade-igf-1-lr3-1mg","status":"publish","type":"product","link":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/product\/receptor-grade-igf-1-lr3-1mg\/","title":{"rendered":"Receptor Grade IGF-1 LR3 (1mg)"},"content":{"rendered":"<h1><span class=\"\">Receptor Grade IGF-1 LR3 (1mg): A High-Purity Research Reagent for IGF-1 Signalling Studies<\/span><\/h1>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">If your research involves the insulin-like growth factor 1 (IGF-1) axis, cellular proliferation, or the PI3K\/AKT signalling pathway,\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0provides a reliable, high-quality research reagent for your experiments. This Long Arg3 IGF-1 (LR3-IGF-1) is an 83\u2011amino\u2011acid analogue of human IGF\u20111<\/span><span class=\"\">, specifically engineered for enhanced potency and stability in cell culture and assay systems<\/span><span class=\"\">. By incorporating a key structural modification\u2014an arginine substitution at position 3 and a 13\u2011amino\u2011acid N\u2011terminal extension<\/span><span class=\"\">\u2014this analogue exhibits markedly reduced binding to IGF\u2011binding proteins (IGFBPs)<\/span><span class=\"\">. This reduction in IGFBP affinity allows for more consistent and reproducible activation of the IGF\u20111 receptor, making\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0a valuable tool for studies on cell growth, receptor signalling, and IGF biology<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">At\u00a0<\/span><strong><span class=\"\">Wuhan Top Miracle Peptides<\/span><\/strong><span class=\"\">, we supply high\u2011purity\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0to research institutions and wholesale buyers across the\u00a0<\/span><strong><span class=\"\">United Kingdom, France, Germany, Spain, Sweden, Italy, and the USA<\/span><\/strong><span class=\"\">. Every batch is lyophilised, HPLC\u2011 and SDS\u2011PAGE\u2011verified to &gt;95% purity<\/span><span class=\"\">, and accompanied by a Certificate of Analysis (COA), ensuring your investigations into IGF\u20111 receptor pharmacology, cell signalling, and regenerative biology begin with uncompromising quality.<\/span><\/p>\n<h2><span class=\"\">What Is Receptor Grade IGF-1 LR3 and How Does It Work?<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">To fully appreciate the research potential of\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">, it is essential to understand its molecular design and the mechanism by which it achieves enhanced biological activity.<\/span><\/p>\n<h3><span class=\"\">The LR3 Modification: A Structurally Enhanced IGF\u20111 Analogue<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">LR3\u2011IGF\u20111 is an 83\u2011amino\u2011acid analogue of human IGF\u20111, comprising the complete human IGF\u20111 sequence with two key modifications<\/span><span class=\"\">:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Arginine Substitution at Position 3:<\/span><\/strong><span class=\"\">\u00a0The glutamic acid (Glu) at position 3 of native IGF\u20111 is replaced with arginine (Arg). This substitution is responsible for the &#8220;R3&#8221; designation and significantly reduces the peptide&#8217;s affinity for IGF\u2011binding proteins<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">N\u2011Terminal Extension:<\/span><\/strong><span class=\"\">\u00a0A 13\u2011amino\u2011acid extension peptide is added at the N\u2011terminus, further enhancing the peptide&#8217;s stability and biological activity<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">These modifications result in an analogue that retains full binding affinity for the IGF\u20111 receptor but exhibits dramatically reduced affinity for IGFBPs<\/span><span class=\"\">. In fact, IGF\u20111 has approximately\u00a0<\/span><strong><span class=\"\">1000\u2011fold higher affinity<\/span><\/strong><span class=\"\">\u00a0for IGFBP\u20113 and IGFBP\u20114 than LR3\u2011IGF\u20111<\/span><span class=\"\">.<\/span><\/p>\n<h3><span class=\"\">Mechanism of Action: Sustained IGF\u20111 Receptor Activation<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The biological activity of\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0is rooted in its ability to provide sustained, high\u2011level activation of the type 1 IGF receptor<\/span><span class=\"\">:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Receptor Binding with Similar Affinity:<\/span><\/strong><span class=\"\">\u00a0LR3\u2011IGF\u20111 binds to the IGF\u20111 receptor with affinity similar to that of wild\u2011type IGF\u20111<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Reduced IGFBP Sequestration:<\/span><\/strong><span class=\"\">\u00a0Because it is not rapidly neutralised by IGFBPs, LR3\u2011IGF\u20111 achieves a higher level of receptor occupancy<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Enhanced Signalling Activation:<\/span><\/strong><span class=\"\">\u00a0This leads to more robust activation of downstream signalling molecules<\/span><span class=\"\">, including the\u00a0<\/span><strong><span class=\"\">PI3K\/AKT pathway<\/span><\/strong><span class=\"\">\u00a0(promoting cell survival and inhibiting apoptosis) and\u00a0<\/span><strong><span class=\"\">ERK1\/2 signalling<\/span><\/strong><span class=\"\">\u00a0(driving proliferation and differentiation)<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Increased Biological Potency:<\/span><\/strong><span class=\"\">\u00a0In cultured L6 myoblasts, the reduced association with IGFBPs gives LR3\u2011IGF\u20111 a\u00a0<\/span><strong><span class=\"\">5\u2011 to 10\u2011fold greater biological potency<\/span><\/strong><span class=\"\">\u00a0compared to native IGF\u20111<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"\">Key Research Applications for Receptor Grade IGF-1 LR3 (1mg)<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0is a versatile research reagent with applications spanning several domains of cellular and molecular research.<\/span><\/p>\n<h3><span class=\"\">IGF\u20111 Receptor &amp; Signal Transduction Research<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The peptide&#8217;s capacity to activate IGF\u20111 receptor\u2011mediated signalling makes it an indispensable reagent for probing intracellular pathways involved in metabolism, apoptosis, and gene expression<\/span><span class=\"\">. Researchers frequently employ LR3\u2011IGF\u20111 to delineate the differential effects of IGF\u20111 analogues on downstream effectors, providing insights into the specificity and redundancy of growth factor signalling.<\/span><\/p>\n<h3><span class=\"\">\u00a0Cell Proliferation &amp; Survival Studies<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">LR3\u2011IGF\u20111 is one of the most potent natural activators of the AKT signalling pathway, which stimulates cell growth and proliferation and inhibits apoptosis<\/span><span class=\"\">. By binding to the IGF\u20111 receptor and activating downstream signalling cascades<\/span><span class=\"\">, it enables researchers to dissect the molecular underpinnings of mitogenesis and survival<\/span><span class=\"\">. Its enhanced resistance to IGFBPs ensures sustained receptor engagement, providing robust and reproducible stimulation in cell culture models<\/span><span class=\"\">.<\/span><\/p>\n<h3><span class=\"\">Stem Cell &amp; Regenerative Medicine Research<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">LR3\u2011IGF\u20111 is widely used in stem cell research to support the expansion and maintenance of various stem cell populations. It has been shown to regulate lymphopoiesis by stimulating the proliferation and differentiation of T and B cells in lymphoid organs. Together with other growth factors, IGF\u2011I stimulates the differentiation and proliferation of myeloid cells.<\/span><\/p>\n<h3><span class=\"\">\u00a0Muscle, Bone &amp; Cartilage Research<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">As a mitogenic polypeptide growth factor, LR3\u2011IGF\u20111 stimulates the proliferation and survival of various cell types, including muscle, bone, and cartilage tissue\u00a0<\/span><em><span class=\"\">in vitro<\/span><\/em><span class=\"\">. Experimental infusion of LR3\u2011IGF\u20111 into late\u2011gestation fetal sheep has been shown to increase fetal organ growth and skeletal muscle myoblast proliferation<\/span><span class=\"\">. This positions LR3\u2011IGF\u20111 as a valuable tool for studying musculoskeletal development and regeneration.<\/span><\/p>\n<h3><span class=\"\">\u00a0Mammalian Cell Culture &amp; Biopharmaceutical Manufacturing<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">LR3\u2011IGF\u20111 was specifically developed for supplementation of mammalian cell culture to support the survival and proliferation of cells<\/span><span class=\"\">. Supplementation of cell cultures with LR3\u2011IGF\u20111 at a much lower concentration results in equivalent or better productivity than supplementation with standard concentrations of insulin<\/span><span class=\"\">. This makes it an ideal choice for both research and large\u2011scale culturing of CHO, ES, NK, HSC, MSC, fibroblast, hybridomas, and many other cell types.<\/span><\/p>\n<h2><span class=\"\">Chemical &amp; Physical Specifications<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Accurate characterisation of\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0is essential for reproducible experimental design. Below are the verified specifications from multiple research suppliers.<\/span><\/p>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<div class=\"ds-scroll-area__gutters\">\n<div class=\"ds-scroll-area__horizontal-gutter\"><\/div>\n<div class=\"ds-scroll-area__vertical-gutter\"><\/div>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Parameter<\/span><\/th>\n<th><span class=\"\">Specification<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong><span class=\"\">Common Names<\/span><\/strong><\/td>\n<td><span class=\"\">LR3-IGF-1, Long Arg3 IGF-1, IGF-I LR3, rhLR3IGF-1<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Amino Acid Count<\/span><\/strong><\/td>\n<td><span class=\"\">83 amino acids (analogue of human IGF\u20111)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Molecular Weight<\/span><\/strong><\/td>\n<td><span class=\"\">~9.1 kDa (9110.6 \u00b1 2 Da)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">CAS Number<\/span><\/strong><\/td>\n<td><span class=\"\">946870-92-4<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Purity<\/span><\/strong><\/td>\n<td><strong><span class=\"\">&gt;95%<\/span><\/strong><span class=\"\">\u00a0(SDS-PAGE &amp; HPLC)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Biological Activity<\/span><\/strong><\/td>\n<td><span class=\"\">ED\u2085\u2080 &lt; 10 ng\/ml (CHO cell proliferation \/ L6 myoblast protein synthesis)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Endotoxin Level<\/span><\/strong><\/td>\n<td><span class=\"\">&lt; 1 EU\/\u03bcg (LAL method)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Appearance<\/span><\/strong><\/td>\n<td><span class=\"\">White to off\u2011white lyophilised powder<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Source<\/span><\/strong><\/td>\n<td><span class=\"\">Produced in\u00a0<\/span><em><span class=\"\">E. coli<\/span><\/em><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Storage (Lyophilised)<\/span><\/strong><\/td>\n<td><span class=\"\">2\u20118\u00b0C for up to 2 years (as freeze\u2011dried product)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Storage (Reconstituted)<\/span><\/strong><\/td>\n<td><span class=\"\">2\u20118\u00b0C for short\u2011term use; single\u2011use aliquots at \u201320\u00b0C for long\u2011term storage<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<blockquote>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Note on Purity:<\/span><\/strong><span class=\"\">\u00a0The 1\u202fmg mass refers to the weight of the protein in its lyophilised form. Receptor Grade indicates a high\u2011quality research reagent specifically developed for studies on cell growth, IGF receptors, and IGF\u2011binding proteins<\/span><span class=\"\">.<\/span><\/p>\n<\/blockquote>\n<h2><span class=\"\">Reconstitution &amp; Handling Protocol for Receptor Grade IGF-1 LR3 (1mg)<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Proper reconstitution of\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0is critical for maintaining its structural integrity and biological activity.<\/span><\/p>\n<h3><span class=\"\">Step 1 \u2013 Preparation<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Bring the sealed LR3\u2011IGF\u20111 vial and your chosen diluent to room temperature.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Recommended diluent:<\/span><\/strong><span class=\"\">\u00a0Sterile 10\u202fmM HCl or sterile PBS (pH\u202f5\u20137) containing 0.1% carrier protein (e.g., BSA or HSA) to prevent adsorption to surfaces<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Clean your work surface with 70% ethanol and lay out sterile syringes, alcohol wipes and a clean work mat.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Step 2 \u2013 Vial Sanitisation<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Wipe the rubber stopper of the LR3\u2011IGF\u20111 vial with a fresh 70% ethanol wipe. Allow the alcohol to evaporate completely before piercing.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Briefly centrifuge<\/span><\/strong><span class=\"\">\u00a0the vial prior to opening to bring the contents to the bottom<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Step 3 \u2013 Reconstitution<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Draw your desired volume of diluent into a sterile syringe. A common starting concentration for research applications is\u00a0<\/span><strong><span class=\"\">1\u202fmg per 1\u202fmL of diluent<\/span><\/strong><span class=\"\">, yielding a\u00a0<\/span><strong><span class=\"\">1\u202fmg\/mL<\/span><\/strong><span class=\"\">\u00a0stock solution<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Insert the needle and slowly inject the diluent\u00a0<\/span><strong><span class=\"\">against the inner glass wall<\/span><\/strong><span class=\"\">. Do not spray directly onto the lyophilised powder.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Gently swirl the vial until the solution is clear and fully dissolved.\u00a0<\/span><strong><span class=\"\">Do not shake vigorously<\/span><\/strong><span class=\"\">, as shaking can cause denaturation.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Step 4 \u2013 Aliquoting &amp; Storage<\/span><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Immediately after dissolution, aliquot the reconstituted LR3\u2011IGF\u20111 into single\u2011use sterile vials to avoid repeated freeze\u2011thaw cycles<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Store aliquots at \u201320\u00b0C for long\u2011term storage<\/span><span class=\"\">.\u00a0<\/span><strong><span class=\"\">Avoid repeated freeze\u2011thaw cycles<\/span><\/strong><span class=\"\">, as this can significantly reduce biological activity.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Once thawed, store at 2\u20118\u00b0C and use within a short period<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"\">Concentration Reference Table<\/span><\/h3>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<div class=\"ds-scroll-area__gutters\">\n<div class=\"ds-scroll-area__horizontal-gutter\"><\/div>\n<div class=\"ds-scroll-area__vertical-gutter\"><\/div>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Vial Mass<\/span><\/th>\n<th><span class=\"\">Diluent Volume<\/span><\/th>\n<th><span class=\"\">Final Concentration<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">1\u202fmg<\/span><\/td>\n<td><span class=\"\">1.0\u202fmL<\/span><\/td>\n<td><span class=\"\">1\u202fmg\/mL<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">1\u202fmg<\/span><\/td>\n<td><span class=\"\">2.0\u202fmL<\/span><\/td>\n<td><span class=\"\">0.5\u202fmg\/mL<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">1\u202fmg<\/span><\/td>\n<td><span class=\"\">0.5\u202fmL<\/span><\/td>\n<td><span class=\"\">2\u202fmg\/mL<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\">*<span class=\"\">Adjust diluent volume based on your experimental requirements. For cell culture applications, further dilute to working concentrations (typically 10\u2013100\u202fng\/mL).<\/span>*<\/p>\n<h2><span class=\"\">Storage &amp; Stability Guidelines for Receptor Grade IGF-1 LR3 (1mg)<\/span><\/h2>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<div class=\"ds-scroll-area__gutters\">\n<div class=\"ds-scroll-area__horizontal-gutter\"><\/div>\n<div class=\"ds-scroll-area__vertical-gutter\"><\/div>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Storage Condition<\/span><\/th>\n<th><span class=\"\">Shelf Life<\/span><\/th>\n<th><span class=\"\">Notes<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">Lyophilised at 2\u20118\u00b0C<\/span><\/td>\n<td><span class=\"\">At least 2 years<\/span><\/td>\n<td><span class=\"\">Store as supplied, protected from light<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Lyophilised at \u201320\u00b0C<\/span><\/td>\n<td><span class=\"\">Up to 6 months<\/span><\/td>\n<td><span class=\"\">Stable for up to 6 months at \u201380\u00b0C from date of receipt<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Reconstituted at 2\u20118\u00b0C<\/span><\/td>\n<td><span class=\"\">Short\u2011term use<\/span><\/td>\n<td><span class=\"\">Use within days; protein may adsorb to surfaces<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Reconstituted aliquots at \u201320\u00b0C<\/span><\/td>\n<td><span class=\"\">Up to 3 months<\/span><\/td>\n<td><span class=\"\">Stock solution can be stored at least 3 months at \u201320\u00b0C<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Reconstituted at \u201380\u00b0C<\/span><\/td>\n<td><span class=\"\">Up to 6 months<\/span><\/td>\n<td><span class=\"\">Optimal for long\u2011term storage with carrier protein<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2><span class=\"\">Why Choose Wuhan Top Miracle Peptides for Receptor Grade IGF-1 LR3 (1mg)?<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">As an authentic licensed peptide supplier based in the\u00a0<\/span><strong><span class=\"\">United Kingdom<\/span><\/strong><span class=\"\">, we supply\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0and a wide range of research\u2011grade reagents under rigorous quality assurance protocols, fully aligned with Google&#8217;s\u00a0<\/span><strong><span class=\"\">E\u2011E\u2011A\u2011T<\/span><\/strong><span class=\"\">\u00a0standards.<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Verified Purity:<\/span><\/strong><span class=\"\">\u00a0Independent HPLC and SDS\u2011PAGE analysis with purity guaranteed\u00a0<\/span><strong><span class=\"\">&gt;95%<\/span><\/strong><span class=\"\">\u00a0for every batch<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Biological Activity Verified:<\/span><\/strong><span class=\"\">\u00a0Each batch is tested for biological activity (ED\u2085\u2080 &lt; 10\u202fng\/ml) to ensure consistent performance<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Low Endotoxin:<\/span><\/strong><span class=\"\">\u00a0Endotoxin levels are maintained at\u00a0<\/span><strong><span class=\"\">&lt; 1 EU\/\u03bcg<\/span><\/strong><span class=\"\">.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">GMP\u2011Compliant Manufacturing:<\/span><\/strong><span class=\"\">\u00a0All proteins are produced in ISO\u202f13485:2016 and GMP\u2011certified facilities.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Full Traceability:<\/span><\/strong><span class=\"\">\u00a0Batch\u2011specific Certificates of Analysis (COA) are available for every order.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Wholesale Supply:<\/span><\/strong><span class=\"\">\u00a0We serve research institutions, laboratories, and wholesale buyers across the UK, EU, and USA with flexible volume pricing and reliable logistics.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">UK\u2011Based Regulatory Compliance:<\/span><\/strong><span class=\"\">\u00a0All products are supplied strictly as research\u2011grade reagents for laboratory use only (RUO)<\/span><span class=\"\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"\">FAQ: Receptor Grade IGF-1 LR3 (1mg)<\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What is Receptor Grade IGF-1 LR3 (1mg)?<\/span><\/strong><br \/>\n<span class=\"\">Receptor Grade IGF-1 LR3 is a synthetic 83\u2011amino\u2011acid analogue of human IGF\u20111 with enhanced biological potency<\/span><span class=\"\">. It contains an arginine substitution at position 3 and a 13\u2011amino\u2011acid N\u2011terminal extension<\/span><span class=\"\">, which significantly reduce binding to IGF\u2011binding proteins and prolong its half\u2011life<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">\u00a0What is the molecular weight of IGF-1 LR3?<\/span><\/strong><br \/>\n<span class=\"\">The molecular weight is approximately\u00a0<\/span><strong><span class=\"\">9.1 kDa<\/span><\/strong><span class=\"\">\u00a0(9110.6 \u00b1 2 Da)<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What are the primary research applications for Receptor Grade IGF-1 LR3?<\/span><\/strong><br \/>\n<span class=\"\">IGF-1 LR3 is used in IGF\u20111 receptor and signal transduction research, cell proliferation and survival studies, stem cell and regenerative medicine research, muscle, bone and cartilage research, and mammalian cell culture optimisation<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">How does IGF-1 LR3 differ from native IGF-1?<\/span><\/strong><br \/>\n<span class=\"\">IGF\u20111 LR3 has\u00a0<\/span><strong><span class=\"\">approximately 1000\u2011fold lower affinity for IGF\u2011binding proteins (IGFBPs)<\/span><\/strong><span class=\"\">\u00a0compared to native IGF\u20111<\/span><span class=\"\">. This results in enhanced potency, a significantly prolonged half\u2011life, and a\u00a0<\/span><strong><span class=\"\">5\u2011 to 10\u2011fold greater biological potency<\/span><\/strong><span class=\"\">\u00a0in cell culture models<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What purity does your Receptor Grade IGF-1 LR3 (1mg) meet?<\/span><\/strong><br \/>\n<span class=\"\">Our IGF\u20111 LR3 is tested to\u00a0<\/span><strong><span class=\"\">&gt;95% purity<\/span><\/strong><span class=\"\">\u00a0by SDS\u2011PAGE and HPLC<\/span><span class=\"\">. A Certificate of Analysis (COA) is supplied with every order.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">How should I reconstitute Receptor Grade IGF-1 LR3 (1mg)?<\/span><\/strong><br \/>\n<span class=\"\">Reconstitute with sterile 10\u202fmM HCl or sterile PBS (pH\u202f5\u20117) containing 0.1% carrier protein (e.g., BSA) to prevent adsorption<\/span><span class=\"\">. Allow the vial to reach room temperature, briefly centrifuge to bring contents to the bottom<\/span><span class=\"\">, then slowly inject the diluent against the inner glass wall and swirl gently. Do not shake.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">How should I store reconstituted IGF-1 LR3?<\/span><\/strong><br \/>\n<span class=\"\">Reconstituted IGF\u20111 LR3 should be aliquoted into single\u2011use vials and stored at \u201320\u00b0C for up to 3 months<\/span><span class=\"\">. Avoid repeated freeze\u2011thaw cycles<\/span><span class=\"\">. Including a carrier protein (0.1% BSA or HSA) in the reconstitution buffer is recommended to prevent loss due to adsorption.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Is Receptor Grade IGF-1 LR3 research reagent legal to purchase in the UK?<\/span><\/strong><br \/>\n<span class=\"\">Yes. Receptor Grade IGF\u20111 LR3 is a laboratory reagent sold for\u00a0<\/span><strong><span class=\"\">research use only (RUO)<\/span><\/strong><span class=\"\">. It is fully legal to purchase, possess, and use in the United Kingdom for legitimate in\u2011vitro or in\u2011vivo scientific research, provided it is not marketed with therapeutic claims.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What is the difference between Receptor Grade and Media Grade IGF-1 LR3?<\/span><\/strong><br \/>\n<span class=\"\">Receptor Grade is a high\u2011quality research reagent for studies on cell growth, IGF receptors and IGF\u2011binding proteins<\/span><span class=\"\">. Media Grade is designed for commercial cell culture applications at a more economical cost for studies requiring larger quantities<\/span><span class=\"\">.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Does Wuhan Top Miracle Peptides ship internationally?<\/span><\/strong><br \/>\n<span class=\"\">Yes. We ship across the EU (France, Germany, Spain, Sweden, Italy) and to the USA from our UK warehouse. Wholesale pricing is available for bulk orders.<\/span><\/p>\n<h2>Wholesale IGF-1 LR3 1mg Supply Across the UK and Europe<\/h2>\n<p class=\"isSelectedEnd\">Wuhan Top Miracle Peptides supports wholesale peptide buyers in the United Kingdom and international markets.<\/p>\n<h3>We Support Enquiries From:<\/h3>\n<ul data-spread=\"false\">\n<li>United Kingdom<\/li>\n<li>France<\/li>\n<li>Germany<\/li>\n<li>Spain<\/li>\n<li>Sweden<\/li>\n<li>Italy<\/li>\n<li>USA<\/li>\n<li>Wider Europe<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">For larger IGF-1 LR3 1mg enquiries, contact our team before ordering. This helps confirm stock, wholesale pricing, documentation, shipping options, and buyer verification requirements.<\/p>\n<h2>Where to Source Receptor Grade IGF-1 LR3 (1mg) in the UK<\/h2>\n<p class=\"isSelectedEnd\">If you are searching for <strong>where to source IGF-1 LR3 1mg in the UK<\/strong>, Wuhan Top Miracle Peptides provides a simple professional enquiry process.<\/p>\n<h3>Professional Enquiry Process<\/h3>\n<ol start=\"1\" data-spread=\"false\">\n<li>Review the IGF-1 LR3 1mg product details.<\/li>\n<li>Check the current label and batch information.<\/li>\n<li>Confirm the product identity from documentation.<\/li>\n<li>Contact our team for availability.<\/li>\n<li>Ask about COA and purity-related documentation.<\/li>\n<li>Confirm your shipping country.<\/li>\n<li>Discuss wholesale quantity requirements.<\/li>\n<li>Complete buyer verification where required.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/bulk-orders\/\"><strong>Bulk Peptides Page<\/strong><\/a><br \/>\n<a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/shipping-returns\/\"><strong>Shipping &amp; Returns Page<\/strong><\/a><br \/>\n<a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/contact-us\/\"><strong>Contact Us Page<\/strong><\/a><br \/>\n<a href=\"https:\/\/wuhantopmiraclepeptides.com\/index.php\/shop-3\/\"><strong>Shop Page<\/strong><\/a><br \/>\n<strong>Quality \/ Compliance Page<\/strong><br \/>\n<strong>Google Search Central<\/strong><br \/>\n<strong>GOV.UK \/ MHRA<\/strong><br \/>\n<strong>ASA \/ CAP Code Section 12<\/strong><br \/>\n<strong>Scientific reference source such as PubMed, NCBI, or a validated protein database<\/strong><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">From its innovative design as a long\u2011acting IGF\u20111 analogue with dramatically reduced IGFBP binding to its well\u2011documented role in activating the PI3K\/AKT and ERK1\/2 signalling pathways,\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0provides a uniquely potent and sustained platform for advanced cellular and molecular research. Its ability to drive robust cell proliferation, promote survival through apoptosis inhibition, and support stem cell expansion\u2014supported by decades of peer\u2011reviewed research and validated biological activity\u2014makes it an essential addition to any laboratory investigating growth factor signalling, regenerative biology, or cell culture optimisation. By choosing high\u2011purity, lab\u2011verified\u00a0<\/span><strong><span class=\"\">Receptor Grade IGF-1 LR3 (1mg)<\/span><\/strong><span class=\"\">\u00a0from\u00a0<\/span><strong><span class=\"\">Wuhan Top Miracle Peptides<\/span><\/strong><span class=\"\">, you ensure that your research is built on a foundation of quality, reproducibility, and scientific integrity.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Ready to advance your research with Receptor Grade IGF-1 LR3 (1mg)?<\/span><\/strong><span class=\"\">\u00a0Browse our product catalogue, request a wholesale quote, or contact our support team today to discuss your laboratory&#8217;s specific needs.\u00a0<\/span><strong><span class=\"\">Place your order now<\/span><\/strong><span class=\"\">\u00a0and receive GMP\u2011grade IGF\u20111 LR3 delivered directly to your facility in the UK, EU, or USA.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<h1>Receptor Grade IGF-1 LR3 (1mg)<\/h1>\n<p class=\"text-token-text-primary leading-relaxed\">High-purity Receptor Grade IGF-1 LR3 (1mg) for IGF-1 receptor, cell growth &amp; AKT pathway studies. \u226595% purity. Trusted UK\/EU wholesale supplier for research labs.<\/p>\n","protected":false},"featured_media":256,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[18],"product_tag":[461,471,268,395,468,425,475,467,463,465,466,462,464,470,474,469,472,479,476,477,232,212,266,473,215,478,269,218,239],"class_list":["post-946","product","type-product","status-publish","has-post-thumbnail","product_cat-peptides","product_tag-buy-igf-1-lr3-online-uk","product_tag-cheap-igf-1-lr3-uk","product_tag-coa-peptide-supplier-uk","product_tag-europe-peptide-supplier","product_tag-growth-factor-injection-uk","product_tag-growth-factor-research-peptide-uk","product_tag-igf-1-lr3-1mg-peptide","product_tag-igf-1-lr3-anti-ageing","product_tag-igf-1-lr3-bodybuilding-peptide","product_tag-igf-1-lr3-dosage","product_tag-igf-1-lr3-fat-loss","product_tag-igf-1-lr3-for-muscle-growth","product_tag-igf-1-lr3-injection-guide","product_tag-igf-1-lr3-no-prescription","product_tag-igf-1-lr3-peptide-uk","product_tag-igf-1-lr3-performance-peptide","product_tag-igf-1-lr3-recovery-peptide","product_tag-igf-1-lr3-supplier-uk","product_tag-long-r3-igf-1-uk","product_tag-lr3-igf-1-peptide-uk","product_tag-peptide-purity-uk","product_tag-peptides-for-sale-uk","product_tag-professional-peptide-supplier-uk","product_tag-receptor-grade-igf-1-lr3-uk","product_tag-research-peptides-europe","product_tag-research-grade-igf-1-lr3","product_tag-uk-peptide-supplier","product_tag-where-to-buy-peptides-in-uk","product_tag-wholesale-peptides-uk","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product\/946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/comments?post=946"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/media\/256"}],"wp:attachment":[{"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/media?parent=946"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=946"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=946"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wuhantopmiraclepeptides.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}