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.
Overview & Description. This test measures the amount of chloride in the blood or serum. Chloride is one of the important chemicals that is found in the body. Changes in chloride levels in the blood are often similar to changes in sodium levels. This is true because sodium and chloride are often linked together in the body. Who is a candidate for the test? If a doctor suspects one of the conditions that result from too high or too low a level of chloride, he or she may order this test. How is the test performed? A sample of blood is taken from a vein on the forearm or hand. First, the skin over the vein is cleaned with an antiseptic such as alcohol.