Apharmaceutical company conducts an experiment in which a subject takes 100 mg of a substance orally. the researchers measure how many hours it takes for one quarter of the substance to exit the bloodstream. what kind of variable is the company studying?

Pharmacokinetics

Explanation:

Pharmacokinetics is the branch of pharmacology that studies what happens with a drug  from the moment it is administered until its total elimination from the body. Its the study in detail  of the absorption, distribution, metabolism and excretion of the drug or its waste.

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