Table 1.
Amino acid requirements in healthy children and under certain conditions determined using the IAAO method.
| Population | Amino Acid (mg/kg/d)a | |||||
|---|---|---|---|---|---|---|
| Total BCAA | Methionine (no cysteine) | Methionine + Cysteine | Lysine | Tryptophan | Phenylalanine | |
| Healthy North American children | 147 (28) | 12.9 (29) | 5.8 (30) | 35 (31) | 4.7 (32) | – |
| Healthy North American adults | 144 (33) | 12.6 (34) | 4.5 (35) | 36 (36) | 4 (37) | 9.1 (38) |
| Cholestatic liver disease children | 209 (39) | – | – | – | – | – |
| Post-liver transplant children | 172 (40) | – | – | – | – | – |
| Maple syrup urine disease | 45 (41) | – | – | – | – | – |
| Chronic renal insufficiency children | – | 12.6 (42) | 7.3 (42) | – | – | – |
| Healthy Indian children | – | – | – | 33.5 (43) | – | – |
| Stunted Indian children (with gut parasites) | – | – | – | 42.8 (44) | – | – |
| Stunted Indian children (after treatment of parasites) | – | – | – | 35.5 (44) | – | – |
| Children with phenylketonuria (PKU) | – | – | – | – | – | 14 (45) |
a
Values described are mean amino acid requirements.