label: Reduced circulating aromatic L-amino acid decarboxylase activity
label_lc: reduced circulating aromatic l-amino acid decarboxylase activity
description: "The activity of aromatic L-amino acid decarboxylase (also known as DOPA decarboxylase, tryptophan decarboxylase, and 5-hydroxytryptophan decarboxylase) in the blood circulation is below the lower limit of normal."