Doubts Cast on Insulin Test Evidence in Lucy Letby Case

A group of pediatric doctors and toxicologists argue that the insulin tests used in the trial of Lucy Letby, convicted of murdering seven babies, were unreliable, calling into question the validity of the evidence that led to her conviction.

Seven pediatric doctors and toxicology experts have recently presented a report that challenges the integrity of the insulin tests that played a crucial role in the conviction of Lucy Letby, a nurse sentenced to 15 life terms for the murder of seven infants at a British hospital. The findings were submitted to the Criminal Cases Review Commission, which examines potential miscarriages of justice.

Represented by her attorney, Mark McDonald, Letby's legal team hopes to gain approval for a full appeal based on this new critical evidence. The experts, which include distinguished professionals from various medical fields, assert that jurors were misled regarding the reliability of the insulin testing conducted during the trial.

In 2023, Letby was found guilty of deliberately harming newborns through various means such as injecting them with air and feeding them excessive amounts of milk, as well as the alleged insulin poisoning. However, the recent report highlights significant concerns regarding the evidence pertaining to insulin levels that supported the prosecution's claims.

The opposing experts have stated, "Our inescapable conclusion is that this evidence significantly undermines the validity of the assertions made about the insulin and C-peptide testing presented in Court." Despite Letby’s unwavering claims of innocence, efforts to revisit her case for a comprehensive appeal have faced multiple rejections.

This development adds to the controversy surrounding the case, which has gained further scrutiny following a detailed article in The New Yorker last May, raising serious discussions about the potential miscarriages of justice in Letby’s trial.