LOINC
Version 2.73

32265-1Phenylalanine/Tyrosine [Molar ratio] in Serum or PlasmaActive

Term Description

Phenylalanine/Tyrosine is a primary marker for Phenylketonuria, Hyperphenylalaninemia (variant, benign), Disorders of biopterin biosynthesis and Disorders of biopterin regeneration.
Source: Regenstrief LOINC

Part Descriptions

LP15792-2   Phenylalanine
Phenylalanine is an essential alpha-amino acid. It exists in two forms, a D and an L form, which are enantiomers (mirror-image molecules) of each other. It has a benzyl side chain and its name comes from its chemical structures that consists of a phenyl group substituted for one of the hydrogens in the side chain of alanine. Because of its phenyl group, phenylalanine is an aromatic compound that at room temperature exists as a white, powdery solid. L -phenylalanine (LPA) is an electrically-neutral amino acid and its enantiomer, D -phenylalanine (DPA), can be synthesized artificially. L -phenylalanine can also be converted into L -tyrosine, another one of the twenty protein-forming amino acids. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Phenylalanine (Wikipedia)

LP32175-9   Tyrosine
Tyrosine (from the Greek tyros, meaning cheese, as it was first discovered in cheese[ citationneeded ]), 4-hydroxyphenylalanine, or 2-amino-3(4-hydroxyphenyl)-propanoic acid, is one of the 20 amino acids that are used by cells to synthesize proteins. It has a phenol side chain with a hydroxyl group. Upon the location of the hydroxyl group, there are three structural isomers of Tyr, namely para-Tyr (p-Tyr), meta-Tyr (m-Tyr) and ortho-Tyr (o-Tyr). Enzymatically, only the first isomer (p-Tyr) is produced from L-Phe by the Phe-hydroxylase enzyme. The other two isoforms, m-Tyr and o-Tyr can be produced as a consequence of free radical attack on Phe in states with increased oxidative stress. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Tyrosine (Wikipedia)

LP32175-9   Tyrosine
A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin. Source: National Library of Medicine, MeSH 2006

Fully-Specified Name

Component
Phenylalanine/Tyrosine
Property
SRto
Time
Pt
System
Ser/Plas
Scale
Qn
Method

Additional Names

Short Name
Phe/Tyr SerPl-sRto
Display Name
Phenylalanine/Tyrosine [Molar ratio]
Consumer Name Alpha
Phenylalanine/Tyrosine, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.07
Last Updated
Version 2.70
Order vs. Observation
Observation

Language Variants Get Info

zh-CNChinese (China)
苯丙氨酸/酪氨酸:物质的量比率:时间点:血清/血浆:定量型:
nl-NLDutch (Netherlands)
fenylalanine/tyrosine:molaire verhouding:moment:serum of plasma:kwantitatief:
fr-BEFrench (Belgium)
Phénylalanine/Tyrosine:Ratio de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-CAFrench (Canada)
Phénylalanine/Tyrosine:Ratio de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FRFrench (France)
Phénylalanine/tyrosine:Moles ratio:Ponctuel:Sérum/Plasma:Numérique:
it-ITItalian (Italy)
Fenilalanina/Tirosina:Srto:Pt:Siero/Plasma:Qn:
ko-KRKorean (Korea, Republic of)
페닐알라닌/티로신:물질구성비:검사시점:혈청/혈장:정량:
pl-PLPolish (Poland)
Fenyloalanina/Tyrozyna:Współczynnik substancji:Punkt w czasie:Surowica lub osocze:ilościowy:
pt-BRPortuguese (Brazil)
Fenilalanina/Tirosina:SCrto:Pt:Sor/Plas:Qn:
ru-RURussian (Russian Federation)
Фенилаланин/Тирозин:МольОтн:ТчкВрм:Сыв/Плаз:Колич:
es-ARSpanish (Argentina)
fenilalanina/tirosina:relación de concentración de la sustancia:punto en el tiempo:suero/plasma:cuantitativo:
es-MXSpanish (Mexico)
Fenilalanina / Tirosina:Proporción de sustancia:Punto temporal:Suero o Plasma:Cuantitativo:
es-ESSpanish (Spain)
Fenilalanina/Tirosina:Relacion de Sustancia:Punto temporal:Suero o Plasma:Qn:
tr-TRTurkish (Turkey)
Fenilalanin/Tirozin:SOrn:Zmlı:Ser/Plaz:Kant:

Example Units

Unit Source
{Ratio} Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=32265-1