Determining and implementing individualized platelet support regimens (e.g., administering specified platelet numbers； and, schedules for administration or other intervention, in accordance with the requirements assessed for individual patients) by: monitoring platelet clearance kinetics； analyzing the kinetics to determine value(s) proportionally representing both the extent and frequency of vascular injury, and using such value(s) to determine the momentary requirement for maintaining vascular integrity, and constructing a corresponding platelet administration regimen where said regimen preferably provides for the utilization of platelets selected, from a platelet inventory, in accordance with the recipient's molecular “type”. Releasing from an inventory of a platelet inventory system the particular typed or profiled platelet amounts required to satisfy the platelet administration regimen of each patient. Establishing a replenishing inventory of antigen-typed or antigen-profiled platelets or other cells, which are perishable and may be replaced after expiration, where the inventory can be virtual or held across several locations.
