What is a MacGuffin? Home >> Screenwriting >> MacGuffin. Simply put, a MacGuffin is an object of interest around which the plot revolves. The term was made popular by director Alfred Hitchcock, who constantly used both the name and the technique. In Hitchcock's Words
Guide. A cortisol test is done to measure the level of the hormone cortisol in the blood. The cortisol level may show problems with the adrenal glands or pituitary gland.Cortisol is made by the adrenal glands. Cortisol levels go up when the pituitary gland releases another hormone called adrenocorticotropic hormone (ACTH).uide. A cortisol test is done to measure the level of the hormone cortisol in the blood. The cortisol level may show problems with the adrenal glands or pituitary gland. Cortisol is made by the adrenal glands.
1 Blood/Serum. 2  A cortisol test is done to measure the level of the hormone cortisol in the blood, which may indicate problems with the adrenal glands or pituitary gland. 3  Ideally, perform the test around 8:00 a.m., and aim for the optimal range for adults of 10-15 mcg/dL.hen it comes to cortisol testing, here are the best options. 1  Blood/Serum. 2  A cortisol test is done to measure the level of the hormone cortisol in the blood, which may indicate problems with the adrenal glands or pituitary gland.