Patients at Children’s Hospital at Westmead given wrong test results.

FOUR patients at a Sydney children’s hospital have been handed incorrect test results, with a medical error watchdog calling for improved laboratory monitoring systems.

The mistake at The Children’s Hospital at Westmead has been described by NSW Health as an “isolated incident” due to “a human error in processing”.

“We are nevertheless conducting an audit of other patients’ samples as part of the comprehensive, independent review underway,” chief health officer Dr Kerry Chant said in a statement yesterday.

However, the Medical Error Action Group has questioned how certain the government is that the mix up is an isolated incident.

“By saying it is isolated, how do they know that?” the group’s founder Lorraine Long told ABC Radio today.

“Commenting on this is the first error reported, that worries me because errors go on all the time and most of them aren’t reported.”