We've been using this component interchangeably with FFP, thawed for quite some time. We turn FFP and PF24 into Thawed Plasma upon the first modification. This is a decision that pre-dates me, so I really don't have an answer as to why, but it works for us. When we started receiving more PF24, I did a little looking and found the following link:
http://www.newenglandblood.org/professional/plasmaguide.htm