:Normal range
Blood, umol/L*
Newborn: 95-478
Infants: 75-370
Children: 70-300
Adults: 70-300
Urine, umol/L*
Infants: < 164
Children: < 318
Adults: 240-650
Comment: See amino acid in plasma & serum
Sample: 24 hr urine, spot urine, plasma, (lithium heparin) separate immediately