Medical Dictionary

hyperphenylalaninemia hy·per·phen·yl·al·a·ni·ne·mi·a (hī'pər-fěn'əl-āl'ə-nə-nē'mē-ə, -fē'nəl-)
Abnormally high blood levels of phenylalanine, possibly associated with elevated tyrosine levels, seen especially in newborns.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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