hematocrit absolute change in hematocrit 2014-08-05T17:44:34Z CMO:0002538 JSMITH The difference in hematocrit (the percentage of total blood volume that is made up of red blood cells) 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:0001586 absolute change in packed cell volume absolute change in packed red blood cell volume clinical_measurement_ontology delta Hct