Description of target: Estrone is relevant to health and disease states because of its conversion to estrone sulfate, a long-lived derivative. Estrone sulfate acts as a reservoir that can be converted as needed to the more active estradiol. Estrone (E1, and also oestrone) is an estrogenic hormone secreted by the ovary as well as adipose tissue.;Species reactivity: All;Application: ;Assay info: Assay Methodology: Quantitative Competitive ELISA;Sensitivity: 4.8 pg/mL