The signs of REM sleep (muscle paralysis, EEG desynchrony, eye movements) occur in mammals. Did sleep evolve to keep our ancestors away from predators? Indus Dolphins sleep even though it's dangerous. These dolphins exist in muddy water and through natural selection have become blind because it served no purpose. Why then do they still sleep?
Sweat chloride measurements are used in the laboratory diagnosis of cystic fibrosis. Chloride Titration. The ChloroChek Chloridometer is a coulometric titrator designed to determine chloride ion concentrations in sweat samples with just 10 microliters of sweat. It displays the concentration directly in mmol/L Cl-. The sweat sample is added to an acid buffer/stabilizer working solution.
Hormonal Blood and Urine Tests. 1  ACTH stimulation test. The ACTH stimulation test is the most commonly used test for diagnosing adrenal insufficiency. 2  CRH stimulation test. When the response to the ACTH test is abnormal, a CRH stimulation test can help determine the cause of adrenal insufficiency.