Concentration indicators

measure of inequality in income or wealth distribution

glucose concentration in blood

a measure of the lethal dose of a toxin, radiation, or pathogen required to kill half of a tested population

medical laboratory test

sufficient amount to kill

measure

metric of alcohol intoxication

thumb|Graphical representation of the IC50 determination of the inhibition of an enzyme's activity by a small molecule ("drug"). Four different concentrations of the small molecule (ranging from 30 to 300 μM) were tested.

Workplace environmental standard

upper limit on the concentration in the air of a hazardous substance in the workplace, exposed on a long-term basis without adverse effects

right|thumb|400px|The tissue response (y-axis) to an agonist, in log concentration (x-axis), in the presence of different antagonist concentrations. The EC50 of the agonist is represented by the x co-ordinate that corresponds with the half-maximum of the leftmost curve. This is denoted by [A] Half maximal effective concentration (EC50) is a measure of the concentration of a drug, antibody or toxicant which induces a biological response halfway between the baseline and maximum after a specified exposure time. More simply, EC50 can be defined as the concentration required to obtain a 50% [...] e

measure of the concentration of hemoglobin in red blood cells

denotes the level of exposure of an organism

function of the number of firms and their respective shares of the total production in a market

factor

lowest dosage that is toxic