What is the expression for AUC after a non-intravenous dose including bioavailability?

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Multiple Choice

What is the expression for AUC after a non-intravenous dose including bioavailability?

Explanation:
Systemic exposure after a non-intravenous dose depends on how much drug actually reaches the circulation (bioavailability) and how quickly it is cleared. The AUC, which measures overall exposure, is proportional to the amount that gets into the bloodstream (F × Dose) and inversely proportional to clearance (CL). So the correct expression is AUC = (F × Dose) / CL. If the drug is given intravenously, F equals 1, reducing to AUC = Dose / CL. The other options miss the role of bioavailability (A), invert the relationship with clearance (C), or represent total administered dose rather than exposure (D).

Systemic exposure after a non-intravenous dose depends on how much drug actually reaches the circulation (bioavailability) and how quickly it is cleared. The AUC, which measures overall exposure, is proportional to the amount that gets into the bloodstream (F × Dose) and inversely proportional to clearance (CL). So the correct expression is AUC = (F × Dose) / CL.

If the drug is given intravenously, F equals 1, reducing to AUC = Dose / CL. The other options miss the role of bioavailability (A), invert the relationship with clearance (C), or represent total administered dose rather than exposure (D).

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