Shroud of Turin Facts

Shroud of Turin FactsMore Facts Previous: Bloodstains Were Not Painted  Next: Bloodstains From Real Blood

McCrone and Blood on the Shroud of Turin

According to the McCrone Research Institute web site: "There is no blood in any image area, only red ochre and vermilion in a collagen tempera medium.”

However, Alan Adler, an expert on porphyrins, the types of colored compounds seen in blood, chlorophyll, and many other natural products concluded that the blood is real. In collaboration with John Heller, the conclusions that the blood is real was published in the peer-reviewed scientific journal Applied Optics [19, (16) 1980]. The heme was converted into its parent porphyrin, and this was confirmed with spectral analysis. In addition, the x-ray-fluorescence spectra taken by other scientists showed excess iron in blood areas, as expected for blood. Microchemical tests for proteins were positive in blood areas but not in any other parts of the Shroud.

McCrone did not publish his finding in peer-reviewed scientific journals. Every other scientist who has physically examined the fibers from the Shroud disagrees with McCrone. His findings have not been successfully reproduced by anyone.

Walter McCrone was a world renowned microscopist.


  The scientific study of the Turin shroud is like a microcosm of the scientific search for God: it does more to inflame any debate than settle it.”

  And yet, the shroud is a remarkable artefact, one of the few religious relics to have a justifiably mythical status.

  It is simply not known how the ghostly image of a serene, bearded man was made.”

Scientist-Journalist Philip Ball
Nature, January 2005

Nature, that most prestigious of scientific journals, that once had bragging rights to claim that the Shroud was fake, responding to new, peer-reviewed studies that discredit the carbon 14 dating and show that the Shroud could be authentic.


  1. The Shroud of Turin is certainly much older than the now discredited radiocarbon date of 1260-1390. It is at least twice as old and it could be 2000 years old.  FACTS
  2. Though no one knows how it was made, the image is a selective caramel-like darkening of an otherwise clear coating of starch fractions and various saccharides.  FACTS
  3. The blood is real blood.  FACTS
  4. Much of what we think we see in the image is an optical illusion FACTS

Shroud of Turin Facts Check: 2005 Facts