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Fenton preterm growth chart, showing weight catchup. Birth weight = 1.39 Kg, between 36-37 weeks = 2.2 Kg, between 41-42 weeks = 2.35 Kg, and at 44 weeks = 2.8 Kg.
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F2
The patient was started on a Tyr-free formula (Tyr-Anamix-Infant SHS, UK), and frequent follow ups revealed a decrease in the Tyrosine level to 16 mumol/L (Normal: 55-147 mumol/L) after 30 days of initiating the special formula, and a subsequent decrease in bilirubin (T/D) to 5/2 mg/dL (Table 1) as well as some weight gain, reaching 2.8 Kg (Figure 2) after 45 days.