Urine has long been used in medical testing and treatment. The term diabetes mellitus comes from the sweet taste of patients’ urine, for instance.

Estrogen extracted from pregnant women’s urine used to be used as a supplement for menopausal women. I read recently that some doctors would overprescribe urine tests during pregnancy, bill the patient and sell the excess urine.

Later as an estrogen supplement came Premarin, which is made from pregnant mares’ urine.