what is assay

Assay is a process of analyzing a substance to determine its composition or quality. It is used in various industries such as mining, environmental, chemical, pharmaceutical, and futures markets. In the mining industry, assay tests are used to determine the presence and quantity of minerals or ores. In medicine, an assay is an analysis used to determine the presence of a particular substance and its quantity. Assay tests are also important in pharmaceutical testing to determine the presence, amount, or functional activity of a drug. Assay tests are performed using various techniques such as High-Performance Liquid Chromatography (HLPC/UHPLC), Gas Chromatography (GC), Titrations, Ultraviolet light Absorption (UV), Infrared Absorption (IR), and Atomic Absorption (AA)