Massive Transfusion (MT) is a life-saving trigger in trauma centers, but heavy is the burden of activating significant resources without knowing the blood products will go to good use. The ABC is the ACS recommendation, is easy and requires no additional testing, however newer weighted scores like PWH and TASH have showed promise in external validations. This week, Dr. Laurence takes a deep dive into the literature behind these triggers, their validation as well as some take aways for your use of life-saving Massive Transfusion.