How was urine chart used by medieval doctors?
Medieval doctors would often carry reference charts with them for examinations which would describe the different symptoms of various diseases. Medieval doctors believed that by studying the excretions of a patient that they could successfully identify the condition or disease that was afflicting them. Many doctors would rely on urine for this, and would smell, look at, or even taste the urine of their patients in order to achieve a better diagnosis.
To corroborate their findings, these doctors would then compare the urine to charts which would show the different colors, consistencies, and even flavors of urine of different diseases.