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IGF-1 LR3* is a synthetic protein analogue of human insulin like growth factor 1. It differs from IGF-1 in that it carries an arginine instead of a glutamic acid in its third sequence. IGF-1 LR3 has an additional 13 amino acids for a total of 83 amino acids. It is superior to IGF-1 for its increased potency, and significantly longer half-life of 20-30 hours.
*The chemicals/materials for sale here are intended for laboratory and research use only, unless otherwise explicitly stated. They are not intended for human ingestion or for use in products that may be ingested. You must be at least 18 (eighteen) years of age to purchase goods on this website.
Dan S. (verified owner) –