Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Results 1 - 3 of 3 for Reduced phenylalanine hydroxylase level
  1. Phenylketonuria (Mayo Foundation for Medical Education and Research)  
    Phenylketonuria/Start Here ... Phenylketonuria ... Mayo Foundation for Medical Education and Research
  2. ... Although people with PCD deficiency usually have elevated levels of ... for the reduced activity of pterin-4 alpha-carbinolamine dehydratase in ...
  3. ... body. For example, it works with the enzyme phenylalanine hydroxylase to convert an amino acid called phenylalanine into ... cells in the brain are particularly sensitive to phenylalanine levels, which is why excessive amounts of this substance ...