In a shocking incident, a mother in the US has been accused of injecting faecal matter into her 15-year-old son’s intravenous bag and endangering his life while he was undergoing cancer treatments at a hospital.

Tiffany Alberts, 41, of Wolcott, Indiana, used a syringe to inject faeces into her son’s IV bag on several occasions between November 13 and 17, knowingly placing him “in a situation that endangered the dependent’s life or health”, according to Marion Superior Court documents.

The mother claimed her actions were meant to get her son moved from the ICU of the Riley Hospital for Children in Indianapolis to another unit, where she believed “the treatment was better”, Media reported.

Alberts’ son had been receiving treatment for Leukaemia since early August 2016 at the hospital, a Marion County police affidavit said.

He was released and returned to the hospital a few days later, in early September 2016, with a fever, vomiting and diarrhoea, according to the report.

Blood tests of the boy showed organisms that are normally found in faeces caused an infection which an extensive medical evaluation could not explain.

Suspecting someone may be contaminating the patient’s IV lines, hospital staff began monitoring the teenager’s room with video surveillance, and observed the mother injecting a substance into his central line.

Alberts was brought to the Child Abuse Office for questioning, at first stating she was injecting water to “flush it as the medicine that was given to him burned.”

She later admitted to injecting her son’s own faecal matter, which she kept in a gift bag on the bathroom sink of his room, since November 13.

Alberts was charged with six counts of aggravated battery and one count of neglect of a dependent, resulting in serious bodily injury.

Dr. Veda Ackerman, Associate Professor of Pediatrics at IU School of Medicine who is treating the boy, said her greatest concern is missing the best window to keep the boy’s leukaemia in remission.

The doctor added he “could have died from any of the episodes of septic shock and may well from his leukaemia due to the prolonged delay in therapy.”