calculated plasma epinephrine level absolute change in plasma epinephrine level 2014-05-27T13:13:18Z CMO:0002375 JSmith The difference in the amount of epinephrine in a specific volume of plasma between two points in time or two conditions expressed as the result of the subtraction in and of itself without comparison by ratio with another quantity. The term "absolute change" refers to the subtraction of one value from another, as opposed to a dissimilarity of two values expressed as a ratio or as a percentage. In this context it is not intended to necessarily imply the difference expressed as an absolute value |n|, that is, the numeric value of the difference without regard to its sign. VT:0005660 absolute change in plasma adrenaline level clinical_measurement_ontology