“This week we have a nice paper that highlights some of the ongoing thoughts and controversies about the use of calcium in major haemorrhage protocols. Hopefully you’ve already read Iain’s excellent review of the matter here which is well worth a read together with the links at the end of this article. You should probably also read up on the RePHILL trial of blood in major trauma patients which has it’s own controversies and nuances that are asking questions of those organisations using prehospital blood products…”