Urine is a sterile waste product composed of water soluble nitrogen products.
Normal urine consists of water, urea, salts, and pigments.
Antidiuretic hormone (ADH) is produced by the pituitary gland to control the amount of water that is reabsorbed through the collecting ducts.
Urinalysis is the process of analyzing urine for target parameters of health and disease.
Clearance is a measurement of the renal excretion ability.