What action should be taken if the victim requires a transfusion and samples are needed?

When a victim requires a transfusion, it is critical to collect a pre-transfusion sample as soon as possible. This action is necessary for several reasons. First, a pre-transfusion sample allows medical professionals to properly type and crossmatch the blood, ensuring that the victim receives the correct blood type, which is vital for preventing transfusion reactions that can be life-threatening.

Additionally, collecting a sample before the transfusion occurs is important for forensic purposes. If a crime has taken place and the blood is needed as evidence, having a sample collected prior to any transfusion provides a clear reference point for analysis. This is critical in criminal investigations, as it preserves the integrity of the evidence.

While it might seem reasonable to delay sample collection for safety or to collect a post-transfusion sample, both actions could compromise the quality of care and the integrity of forensic evidence. Delaying collection puts the victim at risk, as it would postpone necessary life-saving measures that rely on accurate blood typing. Similarly, only collecting a post-transfusion sample does not provide the critical information needed for initial medical decisions or adequate evidence for any forensic investigation. Thus, the best practice is to immediately collect a pre-transfusion sample when feasible.