The blood stains on the Shroud tell a remarkable story. By studying them, we can tell that the man in the image was tortured and crucified.

Over ten different chemical tests confirm these markings are indeed bloodstains. Researchers have identified key blood components, including hemoglobin, bilirubin, and albumin—clear indicators of real human blood.

The blood has a bright red color. It contains high levels of creatinine and bilirubin. These are released into the bloodstream when the body is under extreme stress.

Hemoglobin DNA has been detected on the Shroud. Since the Shroud has been displayed and handled over the centuries, the DNA is contaminated and fragmented. Therefore, it is not possible to create a genetic profile of the man of the Shroud.

Multiple studies have concluded that the blood belongs to the AB blood group. This is the same as the blood on the Sudarium of Oviedo, a cloth that is venerated as the face cloth that covered Jesus’s face before his burial.

The blood on the Shroud raises many fascinating questions, not only for scientists. The blood also has a historical and Biblical significance, as we’ll see soon.