Heparin volume

by veronica
(missouri)

You need to prepare a Heparin IV bag of 25,000 units in D5W 500mL. Your pharmacy usually uses 2.5mL of 10,000iu/mL to make these bags, but the only available strength of Heparin in your pharmacy is 10,000iu/10mL. What volume of Heparin needs to be added to the IV bag?
A. 10mL
B. 15mL
C. 25mL
D. 50mL