One of the standard medical tests we get today is a urinalysis, a chemical analysis where doctors can have a glimpse of what’s going on with our kidneys and our blood sugar, among a variety of other things.
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The practice of analyzing human urine, however, has been done since ancient times. In fact, during the middle ages, physicians had a flowchart called a urine wheel to determine what your urine says about your health.
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Source: neatorama