Growth Hormone Assay in Acromegaly, Gigantism, Dwarfism and Hypopituitarism

Abstract

The plasma concentration of growth hormone reaches a peak within one or two hours after the onset of sleep. During most of the day the levels may be almost unmeasurable. The conditions under which plasma is obtained for testing assume great significance in view of the unusual normal secretory pattern. Some applications and limitations of growth hormone assays are considered.