Abstract
Numerous tests are used in clinical practice to assess the integrity of different parts of the endocrine and neuroendocrine systems. In these procedures the relationship between the inhibitory or activating effect of the diagnostic agent and the plasma concentration of the responding hormone are most often considered, without any regard to temporal aspects. As will be shown in this review, however, the time of testing represents a variable of great importance in the interpretation of the data. Furthermore, the time-related differences in the effects of the drugs used as diagnostic but also as therapeutic agents may be critical in the interpretation of both stimulation and suppression tests of endocrine and neuroendocrine functions (Touitou 1989).
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Touitou, Y., Bogdan, A. (1992). Endocrine and Neuroendocrine Axis Testing in Clinical Medicine: Evidence for Time Dependency. In: Touitou, Y., Haus, E. (eds) Biologic Rhythms in Clinical and Laboratory Medicine. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78734-8_28
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