Single Donor Human Urine from Innovative Research is a liquid product of the body that is secreted by the kidneys and excreted through the urethra. Cellular metabolism generates numerous waste compounds, many rich in nitrogen, which require elimination from the bloodstream. This waste is eventually expelled from the body in a process known as micturition, the primary method for excreting water-soluble chemicals from the body. These chemicals can be detected and analyzed by urinalysis. Aside from water, urine contains an assortment of inorganic salts and organic compounds, including proteins, hormones, and a wide range of metabolites.