total urinary biopterin ( b ) , neopterin ( ne ) and monapterin ( m ) were measured in 25 healthy newborns , children and adults , in 49 patients with phenylketonuria ( pku ) assumed to be deficient in phenylalanine-4-hydroxylase ( ph ) , in 7 patients with dihydrobiopterin synthetase ( dhbs ) deficiency and in 4 patients with dihydropteridine reductase ( dhpr ) deficiency .
C0005562
biopterin
C0068527
neopterin