Blood Test Could Reveal Bipolar Disorder

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A blood test could be used to diagnose and assess the severity of certain mental illnesses, such as bipolar disorder, according to a new study. But some experts think this raises ethical concerns about prying into a person's mental status.

Lab tests that can accurately detect mental illnesses have long been considered the “Holy Grail” of psychiatry. Currently, bipolar disorder and other conditions such as depression are diagnosed based on the patient's description of their symptoms and the physician's judgment, sometimes making it difficult to get an accurate diagnosis or determine the severity of a patient's condition. But now researchers have shown that 10 genes that can be detected in the blood could provide a better way to assess a patient.