Answer to Practice Problem #3 for Routes of Elimination of Xenobiotics Tutorial:

 

8 hours. Since the half-life of the drug is 4 hr, the concentration will decline from 100 mcg/ml to 50 mcg/ml in 4 hr. In another 4 hr it will decline from 50 mcg/ml to 25 mcg/ml.

 

 

Last revised 07/17/04

 

ã 2004 -  Craig K. Svensson, Pharm.D., Ph.D.

 

Return to the Routes of Elimination of Xenobiotics Tutorial

 

Return to the Index for Lecture Tutorials

 

Return to Pharmacokinetics and Biopharmaceutics Homepage