Is it true that the tissue sample of Eucharistic miracle from Lanciano is tested in lab and blood group of blood tissue was identified?

Yes, according to multiple scientific investigations, the tissue samples from the Eucharistic miracle of Lanciano have been extensively tested in laboratories, and the blood type has been identified as AB.

The flesh was unequivocally cardiac tissue, and the blood was of type AB, according to Dr. Odoardo Linoli who conducted studies on the samples and presented his findings on March 4, 1971. His study confirmed that the flesh and blood were of human origin.

The key scientific findings include:

Blood Type: The blood was determined to be of type AB, which is considered relatively rare, present in 6% of humans.

Tissue Analysis: The histological and microchemical studies revealed that the relics were human heart muscle tissue, specifically cardiac tissue, and the blood was of type AB.

Additional Properties: While blood taken from a cadaver would deteriorate quickly, these samples continued to maintain the same properties of fresh blood.

Multiple Testing: The samples have been examined by various scientists over the years, including Dr. John Walker of the University of Sydney in Australia, who said that the sample was muscle cells with intact white blood cells.

Interestingly, the same AB blood type has been found in other Eucharistic miracles and various relics associated with Jesus.

The scientific testings are legitimate and has been conducted by qualified researchers, though the interpretation of what these findings mean varies between religious and secular viewpoints.

Importance of Lanciano, Italy

Lanciano, the town in Italian Province of Chieti is well known for the first recorded Catholic Eucharistic Miracle. The miracle happened in 7th century at  monastery dedicated to St. Longinus, where a monk who offered Holy Mass has serious doubts regarding the fundamental Catholic teaching of transubstantiation, the belief that the bread and wine truly become the body and blood of Christ during consecration. When the monk pronounced the sacred words that Catholics believe transform the elements: "This is my body... This is my blood." At that precise instant, according to the account, a profound transformation occurred before his eyes. The unleavened host began to change, taking on the appearance and characteristics of actual human flesh—living tissue that pulsed with life. Simultaneously, the consecrated wine underwent its own metamorphosis, transforming into what appeared to be genuine blood.