11 Facts About Urine

Urine is a liquid by-product of metabolism in humans and in many other animals.

Urine plays an important role in the earth's nitrogen cycle.

Urine contains proteins, hormones, and a wide range of metabolites, varying by what is introduced into the body.

Urine contains antibodies, which can be used in diagnostic antibody tests for a range of pathogens, including HIV-1.

Urine can be used to produce urokinase, which is used clinically as a thrombolytic agent.

Urine fertilizer is usually applied diluted with water because undiluted urine can chemically burn the leaves or roots of some plants, causing plant injury, particularly if the soil moisture content is low.

Urine was used before the development of a chemical industry in the manufacture of gunpowder.

Urine was used in several ancient cultures for various health, healing, and cosmetic purposes; urine drinking is still practiced today.

Urine is either consumed as a remedy to heal yourself or topically for external health.

Urine has often been used as a mordant to help prepare textiles, especially wool, for dyeing.

Urine plays a role in interspecific communication, since it contains semiochemicals that can act as kairomones.