Purpose: Blood phenylalanine monitoring is critical for the management of phenylketonuria. We compared three methods for measuring blood phenylalanine concentration: the amino acid analyzer ...

However, tyramine and phenylalanine are two compounds found in peanut butter that have been associated with migraine headaches (via Association of Migraine Disorders, Medical Offices of Manhattan).

During that same year, Marshall Nirenberg and Heinrich Matthaei began deciphering the genetic code, and they determined that the codon UUU specifically represented the amino acid phenylalanine.