:Normal range
Blood, umol/L*
Newborn: 50-260
Infants: 50-230
Children: 50-200
Adults: 40-200
Urine, umol/L*
Infants: < 11
Children: < 14
Adults: < 44
Comment: Look amino acid in plasma & urine
Sample: 24 hr urine, spot urine, plasma, (lithium heparin) separate immediately