Carbon dating turin
But even if there were blood on the shroud, that would have no bearing on the age of the shroud or on its authenticity.It is claimed that the cloth has some pollen grains and images on it that are of plants found only in the Dead Sea region of Israel.
Of course, the evidence is limited almost exclusively to pointing out facts that would be true the shroud were authentic.It is claimed that there is type AB blood on the shroud. Blood has not been identified on the shroud directly, but it has been identified on sticky tape that was used to lift fibrils from the shroud. Other tests by Adler and Heller have identified it as blood.* If it is blood, it could be the blood of some 14th century person.