2 results about "EC50" patented technology

Half maximal effective concentration (EC₅₀) refers to the concentration of a drug, antibody or toxicant which induces a response halfway between the baseline and maximum after a specified exposure time. EC₅₀ is also written as [A]₅₀. It is commonly used as a measure of a drug's potency, and the use of EC₅₀ is preferred over that of 'potency', which has been criticised for its vagueness. EC₅₀ is a measure of concentration, expressed in molar units (M), where 1 M is equivalent to 1 mol/L.