💊 PCAT Exam Prep

Bioavailability refers to:

A Drug potency

B The fraction of administered drug that reaches systemic circulation in unchanged form

C Drug half-life

D Volume of distribution

✓ Correct Answer: Option B

Bioavailability (F): IV = 100%. Oral is lower due to incomplete absorption and first-pass metabolism. F = AUCoral/AUCiv.