More Than a Test: The Non-Market Value of Blood Typing in Bone Marrow Registries
While modern forensic science heavily relies on DNA, Blood Group Typing still plays a historical and sometimes supplementary role in criminal investigations. In the past, before DNA analysis became widespread, forensic scientists used ABO blood typing to narrow down the pool of suspects. By testing blood found at a crime scene and comparing it to the blood types of suspects, they could include or exclude individuals. While less precise than DNA, it was a valuable tool. Additionally, the ABO antigens aren't just on red blood cells; they can also be found in other bodily fluids like saliva, semen, and tears for people who are "secretors." This allowed forensic experts to gather clues from a wider range of evidence. Today, while DNA provides a near-perfect match, Blood Group Typing remains a fascinating part of forensic history and a testament to the early innovations that paved the way for modern crime-solving techniques.