Drawing and storing whole blood using a <scp>3D</scp> printed bottle cap and a disinfected 500 <scp>mL</scp> drinking bottle—A proof‐of‐concept study: Part 2

The BC²L system represents a feasible, low-cost alternative for whole blood collection in resource-limited or crisis settings. It demonstrated comparable safety and mechanical integrity to standard systems. However, manufacturing refinements are needed to address leakage during transport. This study supports the potential of the BC²L as a valuable tool for enhancing medical preparedness in austere environments.