It is the interest of everyone to find out the answer to this question because it is close to impossibility. Medicinal research has proven to be more susceptible and analysis on serotonin information has actually shown it is possible to measure serotonin levels. Though serotonin is a chemical in the brain used to regulate mood, appetite, and aggression its measure may seem a long dream. This is so because measuring the levels would much be like measuring one’s intelligence and knowing if have people used gotu kola for anxiety. The difficulty of measuring serotonin levels in the brain is because serotonin is either absorbed or released into the blood stream that further breaks up into different compounds. Common Serotonin Tests The test uses a methodology that encompasses the diagnosis of a serotonin-secreting carcinoid tumor. What is actually used to measure the serotonin levels is based on serotonin effects. According to the Association of Clinical Chemistry (AACC). This is how the procedure is carried: Serotonin Effects A blood sample is taken by placing a needle into the vein of the arm. Since serotonin is also found in lungs airways and gastrointestinal tract, it becomes available in blood.  A small amount of serotonin will be found in the blood, but also are large amounts made by carcinoid tumors – masses that grow slowly in the gastrointestinal tract, in particular the appendix and also the lung. These large amounts of serotonin may cause serotonin effects like diarrhea, face flashing, wheezing and an increase ...

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