Inherited metabolic diseases: PKU not suspected, further investigation required

Inform specialist or designated phenylketonuria (PKU) teams that a baby's newborn blood spot screen has found raised levels of phenylalanine and tyrosine.


PKU: notification of ‘PKU not suspected, other disorder follow up’ for designated or specialist PKU team (by screening laboratory to clinician)

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Letter template to tell clinicians a newborn blood spot screen has found a baby to have raised phenylalanine and tyrosine.

The letter specifies that the issue requires further investigation but the results are not suggestive of phenylketonuria.

Published 1 January 2015
Last updated 21 August 2017 + show all updates
  1. Added new version of letter template.
  2. First published.