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Which pharmacokinetic parameter describes the time it takes for the plasma conce

Practice Questions

Q1
Which pharmacokinetic parameter describes the time it takes for the plasma concentration of a drug to reduce by half?
  1. Bioavailability
  2. Half-life
  3. Volume of distribution
  4. Clearance

Questions & Step-by-Step Solutions

Which pharmacokinetic parameter describes the time it takes for the plasma concentration of a drug to reduce by half?
  • Step 1: Understand that pharmacokinetics is the study of how drugs move through the body.
  • Step 2: Learn that one important aspect of pharmacokinetics is how long a drug stays in the bloodstream.
  • Step 3: Know that the term 'half-life' refers to the time it takes for the amount of a drug in the blood to decrease by half.
  • Step 4: Realize that if you start with a certain amount of a drug, after one half-life, you will have half that amount left in the blood.
  • Step 5: Conclude that the pharmacokinetic parameter that describes this time is called 'half-life'.
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