| Term 
 | Definition 
 
        | measurement of the rate and extent (amount) of systemic absorption of the drug |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Absorption Distribution Metabolism Excretion (Toxicity) |  | 
        |  | 
        
        | Term 
 
        | Area Under the Curve (AUC) |  | Definition 
 
        | area under the concentration-time curve over all time; measure of the total systemic exposure to the drug |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | study of the relation of the physical and chemical properties of a drug to its bioavailability, pharmacokinetics, and pharmacodynamic and toxicologic effects |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the proportionality term between rate of elimination of drug from the body and plasma drug concentration, with units of flow (e.g., mL/min or L/hr); also defined as the volume of blood effectively cleared completely of drug per unit time. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | group of tissues with similar blood flow and drug affinity, not a real physiologic or anatomic region; a space in which a drug or metabolite appears kinetically to be located |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | a model in which the body is characterized by one or more spaces into which drug appears kinetically to be distributed |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | fate of the drug after administration; all kinetic processes (distribution and elimination) that occur to a drug once a drug entered the systemic circulation |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | movement of drug to and from the various tissues and organs of the body via the blood |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | a systematic manner of administration of a drug intended for the treatment or amelioration of a disease or condition |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | irreversible loss of drug from the site of mea surement; occurs by two processes: excretion and metabolism |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | irreversible loss of chemically unchanged drug from the body; urinary excretion is the most common pathway |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | time for the concentration or amount of drug to fall by one half |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | conversion of one chemical species to another |  | 
        |  | 
        
        | Term 
 
        | Metabolic Interconversion |  | Definition 
 
        | conversion of metabolites back to the drug; becomes a route of drug elimination only to the extent that the metabolite is excreted or otherwise irreversibly lost from the body |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | mathematical description of a biologic system, used to concisely express quantitative relationships |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | study of cellular and molecular interactions of drugs with their receptors; the relation of the drug concentration or amount at the site of action (receptor) and its pharmacologic response |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the application of genomic information to the identification of drug targets and to an understanding of the causes of genetic variability in drug response ; refers to a combination of genes with effect on drug response |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | study of the time course of drug movement in the body during absorption, distribution and elimination (excretion and biotransformation) |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | process by which a drug proceeds from the site of administration to the systemic circulation where it is measured |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the overall clearance of the drug from the body, represented by the sum of all organ clearance |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | blood or plasma drug concentration is a measure of systemic exposure to a drug |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the degree of separation within an individual between a regimen that is beneficial and tolerable and one that is limited by the adverse effects produced; it is low when the degree of sep aration between the two is small |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the range of exposures to a drug associated with successful therapy |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the apparent volume into which a drug distributes in the body at equilibrium, or the volume of plasma needed to account for the amount of drug in the body at |  | 
        |  |