Urine ferric chloride test

The urine ferric chloride test is a supplementary test used to check whether urine is normal. Phenylketonurics (phenylketonurics; PKU) is a common amino acid metabolic disease, which is caused by enzyme defects in the phenylalanine metabolic pathway, which makes phenylalanine unable to be converted into tyrosine, resulting in Keto acids accumulate and are excreted in large amounts from the urine. The main clinical manifestations are mental retardation, seizures and hypopigmentation. Sieve tests to see if phenylalanine is normal. Through this examination, the corresponding symptoms can be judged.