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Title
Free cortisol index as a surrogate marker for serum free cortisol.
Authors
le Roux, Carel W; Sivakumaran, Sivajenani; Alaghband-Zadeh, Jamshid; Dhillo, Waljit; Kong, Wing May; Wheeler, Michael J
Abstract
The biologically active component of a hormone is the unbound or free fraction. Changes in cortisol-binding protein could give misleading results if only total cortisol is measured for the interpretation of dynamic function tests.