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Test ID: PKU
Phenylalanine and Tyrosine, Plasma

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Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

PHENYLALANINE

Premature: 98-213 nmol/mL

0-31 days: 38-137 nmol/mL

1-24 months: 31-75 nmol/mL

2-18 years: 26-91 nmol/mL

> or =19 years: 35-85 nmol/mL

 

Conversion Formulas:

Result in mg/dL x 60.6=result in nmol/mL

Result in nmol/mL x 0.0165=result in mg/dL

 

TYROSINE

Premature: 147-420 nmol/mL

0-31 days: 55-147 nmol/mL

1-24 months: 22-108 nmol/mL

2-18 years: 24-115 nmol/mL

> or =19 years: 34-112 nmol/mL

 

Conversion Formulas:

Result in mg/dL x 55.6=result in nmol/mL

Result in nmol/mL x 0.0181=result in mg/dL

See Inborn Errors of Amino Acid Metabolism in Special Instructions.



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