Technique	PHENYLALANINE ,(/,)/,(
Principle	Phenylalanine can be converted by oxidative deamination to phenylpyruvic acid which can be identified by the addition of ferric chloride.
Cautions
Method	see also Malonate
Results
Positive control	The test is almost specific for Proteus species which give strong reactions by some strains of Klebsiella aerogenes are also positive.
Negative control
Reagents
Reference