Phenylketonuria (PKU) screening

Related condition or disease: 
Regional Newborn Screening Unit, Phenylketonuria (PKU) screening
Reference range: 

Blood Phenylalanine < 240

Units: 
umol/l
Department: 
Reference Services
Location: 
Blackfriars Hub
Sample type and Volume required: 
Dried Blood Spot
Turnaround time: 
4 days
Criteria for acceptance / rejections of sample
Storage and transport: 
The standard Newborn Blood Spot Screening cards must be used.Samples taken from heelprick at day 5 - 8 of life
Contacts:
Regional Newborn Screening Laboratory at St Thomas'
020 7188 1267
South East Thames Newborn Screening Laboratory
1st Floor
Synnovis Hub
41-43 Blackfriars Road
London
SE1 8NZ
For clinical advice or interpretation of results, please contact the laboratory in the first instance.
Laboratory: 
Regional Newborn Screening Laboratory at Blackfriars Hub

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Last updated: 30/01/2026