:Normal range
:a.m 7-10
6.2-19.4mg/dL 171-536 nmol/L
:p.m 4-8
2.3-12.3mg/dL 64-340 nmol/L
Comment: Cortisol excess and deficiency are at the center of several major disease processes, which require laboratory testing for diagnosis. Random measurements of serum cortisol are often useless. Even in patients with cortisol excess or deficiency, the many factors influencing cortisol can result in cortisol values, which overlap the reference range. Diagnostically useful cortisol measurements require standardized testing protocols in which one or more pre analytic variables are held constant
(Sample: Serum (a.m, p.m