856324.fig.001a
(a)
856324.fig.001b
(b)
856324.fig.001c
(c)
856324.fig.001d
(d)
Figure 1: HPLC chromatograms of cortisone and cortisol. (a) Pure standard substance, (b) blank serum, (c) serum spiked with cortisone, cortisol, and internal standard and (d) sample; 1: internal standard, 2: cortisol and 3: cortisone.