level of serine/threonine-protein phosphatase 4 catalytic subunit (human) in cerebrospinal fluid (OBA_2058242) is the amount of a serine/threonine-protein phosphatase 4 catalytic subunit (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid serine/threonine-protein phosphatase 4 catalytic subunit (human) amount.