night time salivary cortisol found to correlate with early morning urine samples in those with Cushing's. This in addition to the nocturnal salivary cortisol correlation found in past studies. The positive studies on salivary cortisol testing continues to build.
Low cortisol found in those with PTSD. This study suggest the high ACTH/cortisol ratio is not due to enhanced peripheral sensitization to glucocorticoids.
Morning salivary cortisol is as good as serum as screening test for patients with Addison's disease and nighttime salivary cortisol is more adequate than serum in the screening of Cushing's syndrome.
Individuals with type II DM, found to have blunted morning cortisol and decreased hippocampal volume. The hippocampus is the focus of memory. This is similar to what is found in PTSD.