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Crystal Chem Inc. is a leading provider of cutting edge ELISA kits and other high quality research products. We specialize in providing biochemicals, immunoreagents, and ELISA kits to the research community. With over fifteen years of experience, our reach extends globally and we serve customers around world. Our diabetes and obesity research ELISA kits includes: Ultra Sensitive Mouse Insulin ELISA Kit (90080) Ultra Sensitive Rat Insulin ELISA Kit (90060) Rat/Mouse Insulin ELISA Kit (INSKR020) Rat Leptin ELISA Kit (90040) Mouse Leptin ELISA Kit (90030)