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PHENYLALANINE/TYROSINE,
QUANTITATIVE, BLOOD |
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Methodology:
Tandem Mass Spectometry |
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Test Performed At: |
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St. Louis Children’s Hospital |
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Specimen Required: |
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Collect 2.0 mL
(minimum 0.5 mL) of whole blood in a green-top
(lithium heparin) tube(s); a plain, red-top tube(s); a serum gel tube(s); or
a green SAMPLETTE™ / MICROTAINER™. |
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Laboratory Notes: |
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Spin, separate, and freeze. |
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Reference Values: |
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PHENYLALANINE |
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Birth -1 month: |
30-165 micmol/L |
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1-6 months: |
25-150 micmol/L |
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6-24 months: |
35-90 micmol/L |
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2-12 years: |
35-90 micmol/L |
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>12 years: |
35-90 micmol/L |
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TYROSINE
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Birth -1 month: |
20-360 micmol/L |
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1-6 months: |
40-235 micmol/L |
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6-24 months: |
25-85 micmol/L |
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2-12 years: |
25-85 micmol/L |
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>12 years: |
25-85 micmol/L |
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Day(s) Test Set Up: |
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Monday - Friday |
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Cut-Off Time: |
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Turn Around Time: |
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24-48 hours |
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CPT Code: |
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84030 - phenylalanine |
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84510 -
tyrosine |
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KIDDOS Order Name: |
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Phenylalanine/Tyrosine |
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Cerner Order Name: |
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Phenyl/Tyrosine |
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Last Updated 10/09
Last Reviewed 10/09