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.
The cortisol level test is done to check if cortisol production levels are either too high or too low. There are certain diseases, such as Addisonâs disease and Cushingâs disease, which affect the amount of cortisol produced by the adrenal gland.The test is used in the diagnosis of these diseases and as a way to assess the functioning of the adrenal and pituitary glands.here are certain diseases, such as Addisonâs disease and Cushingâs disease, which affect the amount of cortisol produced by the adrenal gland. The test is used in the diagnosis of these diseases and as a way to assess the functioning of the adrenal and pituitary glands.