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HelpTest Code LAB1896 Phenylalanine and Tyrosine
Performing Section
Biochemical Genetics
Specimen Type
Serum or Plasma:
Light Green Top- Lithium Heparin (Preferred)
Red Top- Plain
Gold Top- SST
Purple Top-EDTA
Specimen Volume
Preferred: 0.6 mL (0.2mL serum/plasma)
Minimum: 0.3 mL (0.1 mL serum/plasma)
Processing Instructions
Green, Lavender, Gold top, Red Top – CENTRIFUGE per procedure
Pipette off plasma or serum into pour off tube
Attach original tube to pour off tube with rubber band
Store and ship sample Frozen on dry ice.
Temperature
Frozen (dry ice)
Test Components
Tyrosine
Tyrosine (mg/dL)
Phenylalanine
Phenylalanine (mg/dL)
Reference Range
Tyrosine0 up to 1 month: 55-147 nmol/mL
1 month up to 2 years: 22-108 nmol/mL
2 years up to 18 years: 24-115 nmol/mL
18 years and up: 34-112 nmol/mL
Tyrosine (mg/dL)
0 up to 1 month: 1.0-2.7 mg/dL
1 month up to 2 years: 0.4-2.0 mg/dL
2 years up to 18 years: 0.4-2.1 mg/dL
18 years and up: 0.6-2.0 mg/dL
Phenylalanine
0 up to 1 month: 38-137 nmol/mL
1 month up to 2 years: 31-75 nmol/mL
2 years up to 18 years: 26-91 nmol/mL
18 years and up: 35-85 nmol/mL
Phenylalanine (mg/dL)
0 up to 1 month: 0.6-2.3 mg/dL
1 month up to 2 years: 0.5-1.2 mg/dL
2 years up to 18 years: 0.4-1.5 mg/dL
18 years and up: 0.6-1.4 mg/dL
TAT
3 days
Aliases
PKU (Phenylketonuria)
Hyperphenylalaninemia
Tyrosinemia
Tyrosine
CPT
84030, 84510
Test/Batch Schedule
Mon-Fri