In phenylketonuria FeCI test with urine gives .............. color: (A) Green, (B) Blue, (C) Red, (D) Purple
Answer is A. In ferric chloride test used for detecting the presence of phenols in phenylketonuria,a drop of ferric chloride is added to the urine.Phenols present in urine,will form a complex with Fe(III) to give a transient green colour. Reference:Essential pediatrics-Ghai,8th edition,page no:652