Figure 1

Subject 1 blood ACTH (squares) and 17 hydroxyprogesterone (17OHP, triangles) over 23-hour period while on hydrocortisone (HC, black) or dexamethasone (Dex, brown). Androstenedione levels were less than assay at all time points on both regimens in this patient. To convert to SI units, multiply ACTH by 0.2222 (pmol/L), 17OHP by 30.2572 (pmol/L), and Androstenedione by 34.9162 (pmol/L).