Which of the following is true about five half-lives in drug clearance?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Clinical Chemistry II Test. Utilize flashcards and multiple-choice questions with hints and detailed explanations to enhance your knowledge. Gain confidence for your exam success!

Multiple Choice

Which of the following is true about five half-lives in drug clearance?

Explanation:
Half-life is the time required for the drug’s concentration to fall to half of its current value. With each half-life, the remaining amount is halved again. After five half-lives, the remaining fraction is (1/2)^5 = 1/32, which is about 3%. That means roughly 97% of the drug has been cleared from the body, so five half-lives is the commonly used threshold for near-complete clearance. For perspective, three half-lives leave about 12.5% remaining, seven half-lives about 0.8%, and ten half-lives about 0.1%.

Half-life is the time required for the drug’s concentration to fall to half of its current value. With each half-life, the remaining amount is halved again. After five half-lives, the remaining fraction is (1/2)^5 = 1/32, which is about 3%. That means roughly 97% of the drug has been cleared from the body, so five half-lives is the commonly used threshold for near-complete clearance. For perspective, three half-lives leave about 12.5% remaining, seven half-lives about 0.8%, and ten half-lives about 0.1%.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy