Antibiotic IV Compounding Math Questions

by Vicki Biscarra
(Modesto, Ca. U.S)

A pharmacist dilutes a vial containing 1g of antibiotic with 10 ml of water. The solution is then added to 100 ml of D5W. What is the concentration, in mg/ml ,of the antibiotic in D5W?




A physician orders 2g of an antibiotic to be placed in 1000 ml of D5W. Using a constituted injection that contains 300mg/2ml, how many mls should be added to the IV solution?