Objective: To investigate the effect of illness on preterm infant's hypothalamus-putituary-adrenal axis, we measured the concentration of cortisol, aldosterone and ACTH. Methods: Ninety preterm ...

and cortisol (F), and 24 h urinary cortisol (dUF) and 17-ketogenic steroids (KGS) were measured before, during (serum samples 24 h after the last ACTH dose) and after therapy (means and range nmol ...