Friday, May 5, 2023

PHENYLALANINE/TYROSINE SERUM

Sample, Method, Reference values and Delivery Time Modification

Test code: 3329
Mnemonic code: CFTS

Effective update from 15/05/2023



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Sample:   Refrigerated serum
 
Method: Gas Chromatography – Flame Ionization Detector (GC-FID))
 
 
Reference Values:
Phenylalanine:
<24 Month        28-80 µmol/L
2-17 Years        30-95 µmol/L
>=18 Years        35-80 µmol/L
 
 
Tyrosine
<24 Month        26-115 µmol/L
2-17 Years        31-106 µmol/L
>=18 Years        31-90 µmol/L
 
 
 

Phenylalanine/Tyrosine ratio: Less than 3
    

Delivery term: 7 days
 
         Version of Test: 7

   
Sample: Frozen Plasma EDTA
 
Método: Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
 

References Values:
Phenylalanine:
Premature         98–231 µmol/L
0 - 1 month          38–137 µmol/L
1 month - 2 years     31–75 µmol/L
2 - 18 month        26–91 µmol/L
> 18 years          35–85 µmol/L
 
Tyrosine
Premature         147–420 µmol/L
0 - 1 month          55–147 µmol/L
1 month - 2 years     22–108 µmol/L
2 - 18 years        24–115 µmol/L
> 18 years          34–112 µmol/L
 
Phenylalanine/Tyrosine: Less than 3
 

Delivery term: 6 days
 
         Version of Test: 8









 

   Find the record of the test by clicking here

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