The threshold level at which lead absorption is a notifiable condition under the Health Act 1956 has been reduced as of 9 April 2021.
The notification process is triggered when a person returns a blood test with a lead level of 0.24 µmol/l (or greater). The health practitioner (or medical laboratory) must notify this to the local Medical Officer of Health. This enables public health follow up, the source of the lead exposure to be identified, and further exposures and health risks managed.
The previous blood lead level for notification was 48 µmol/l (or greater).