{"product_id":"igf-1-lr3","title":"IGF-1 LR3","description":"\u003cp\u003eIGF-1 LR3 is a synthetic 83-amino acid analog of human insulin-like growth factor-1 (IGF-1) that has been structurally modified to enhance its biological activity. The 'LR3' designation refers to two key modifications: an arginine substitution at position 3 (replacing glutamic acid) and a 13-amino acid N-terminal extension peptide. These modifications dramatically reduce binding to IGF binding proteins (IGFBPs), resulting in a significantly longer half-life and greater bioavailability compared to native IGF-1. In research settings, IGF-1 LR3 demonstrates approximately 2-3 times greater potency than native IGF-1 in stimulating cellular proliferation, making it a valuable tool for studying growth factor biology, muscle development, and metabolic regulation.\u003c\/p\u003e","brand":"Peptoris Labs","offers":[{"title":"1mg","offer_id":57534683939147,"sku":null,"price":30.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1047\/3599\/8283\/files\/11_2.png?v=1781008282","url":"https:\/\/peptorislabs.com\/products\/igf-1-lr3","provider":"Peptoris Labs","version":"1.0","type":"link"}