In order to be accredited as a Level I Trauma Center by the American College of Surgeons, the center must have a Massive Transfusion Protocol. This concept, which appears to distill down to a of a mix of products, prepared and issued as a bolus or "cycle," was discouraged in the past as a "****tail" approach. Now it has become of interest in light of the very obvious need for adequate transfusion service response to severe traumatic injury, and the fact that it is a required element for ACS accreditation. We have been struggling for about three years to tweak our MTP to satisfy our trauma surgeons' demands/patients' needs. To their credit, the the surgeons have been very judicious in their choices to invoke this process, but our product mix is not quite right yet. (Yes, we know the products ordered should be tailored to the patient, but the MTP is designed to try to get ahead of some of those needs). Has anyone else within the Forum been struggling with this issue, and if so, have they found a formula that meets with their surgeons' approval where it counts, in the trauma bay and in the O.R.? We are obliged for your input.