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Immunoassay reagents intended to perform qualitative and/or quantitative analyses of a sample of body fluids (e.g, serum, plasma, urine) to determine one or more of a group of protein hormones (e.g., adenocortiotropic, human growth hormone) that are typically secreted by a specialized gland (i.e., an endocrine gland) in one location and directly released into the plasma or lymph to exert their specific effects in other organs. Most immunoassays of endocrine hormones are performed using nonisotopic labels and labeled-monoclonal antibodies (immunometric) assays. Radioimmunoassays are also used in some determinations.
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