| 1. Hepatocellular dysfunction |
| 2. Transient tryosinemia of the newborn |
| 3. Genetic enzyme deficiencies in tyrosine degradation |
| Hepatorenal tyrosinemia (hereditary tyrosinemia type 1, HT1) |
| Oculocutaneous tyrosinemia (hereditary tyrosinemia type 2, HT2) |
| 4-OH-phenylpyruvate dioxygenase deficiency (hereditary tyrosinemia type 3, HT3) |
| 4. Miscellaneous |
| Scurvy |
| Hyperthyroidism |
| Postprandial sample |
| Nitisinone therapy |
