The Sokółka Eucharistic claim
On 12 October 2008 a dropped communion host was put in water in the church at Sokółka; a week later it showed a red stain that two Białystok pathologists said resembled heart muscle.
2008 CE · 53.41, 23.50 · status: disputed
The account
The archdiocese of Białystok announced in 2009 that the event 'does not contradict the faith' and the host is displayed in a chapel that draws thousands of pilgrims. The archbishop declined offers of DNA testing.
The sceptical view
The medical university distanced itself from the informal study; critics said the test could not distinguish human from other tissue and proposed the red bacterium Serratia marcescens. In 2024 researchers reproduced similar stains with unconsecrated wafers.
The researched reading
A red stain on a wafer in water, a setting in which microbes routinely produce such colours. Further testing was refused, and the result has since been reproduced with ordinary wafers.
| Explanation | Weight | Why |
|---|---|---|
| A known natural phenomenon | 50% | A wafer dissolving in water is ideal for microbial growth. Kearse and Ligaj (2024) grew bright red areas on about 15% of unconsecrated wafers treated the same way. The water was not stained red, which argues against real bleeding. |
| Undetermined | 28% | The share the reading had given to fabrication on doubt rather than evidence: the record does not settle it either way. |
| A cultural story | 11% | The study was informal and done by pathologists close to the archdiocese, and the archbishop declined DNA testing. That is a framing choice, not a scientific test. |
| A hoax or fabrication | 5% | Without chain of custody or DNA, substitution or contamination with animal tissue cannot be ruled out. |
| Genuinely anomalous | 3% | Two pathologists described heart-like tissue, but their method could not tell human from other mammalian tissue and was never independently replicated. |
| Perception, memory or mind | 3% | Expectation shapes how a stain is read under the microscope. |
Official position: The archdiocese said in 2009 that the event does not contradict the faith; the medical university distanced itself from the study.