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Part Description

LP29119-2   Thyroxine.free
Free T4 is the metabolically active fraction of thyroxine and is the precursor of triiodothyronine (T3). Free T4 is a sensitive test for thyroid function and is increased with hyperthyroidism and decreased with hypothyroidism. Free T4 is not affected by changes in thryoxine-binding proteins. Information from Laboratory Test Handbook, Jacobs DS, DeMott WR, and Oxley DK, LexiComp, 2001. Source: Regenstrief Institute

LOINC Names Get Info

Fully-Specified Name
Thyroxine.free^baseline:MCnc:Pt:Ser/Plas:Qn:
Long Common Name
Thyroxine (T4) free [Mass/volume] in Serum or Plasma --baseline
Short Name
T4 Free BS SerPl-mCnc
Display Name
Free T4 baseline [Mass/Vol]
Consumer Name Alpha Get Info
Free T4 baseline, Blood

Part Model Get Info

  • Component
    Thyroxine.free^baseline
    LP307178-6
    • Analyte
      Thyroxine.free
      LP29119-2
      • Component Numerator
        Thyroxine.free
        LP29119-2
        • Component Numerator Core
          Thyroxine.free
          LP29119-2
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      baseline
      LP20193-6
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    MCnc
    LP6827-2
  • Time
    Pt
    LP6960-1
  • System
    Ser/Plas
    LP7576-4
    • System Core
      Ser/Plas
      LP7576-4
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NULL
     

Basic Attributes

Class
CHAL
Type
Laboratory
First Released
Version 2.32
Last Updated
Version 2.70 (MIN)
Order vs. Observation
Observation

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Tyroxin.volný^Výchozí hodnota:Hmotnostní koncentrace:Časový bod:Sérum/plazma:Kvantitativní:
el-GRGreek (Greece)Θυροξίνη.ελεύθερη^τιμή αναφοράς:MCnc:Pt:Ορός/Πλάσμα:Qn:
Synonyms: CHAL MCnc Pt Qn Θυροξίνη Θυροξίνη.ελεύθερη Ορός Ορός/Πλάσμα Πλάσμα τιμή αναφοράς
es-ESSpanish (Spain)Tiroxina libre^Basal:Concentración de masa:Punto temporal:Suero o Plasma:Qn:
Synonyms: Cuantitativo
es-MXSpanish (Mexico)Thyroxine.libre ^ línea de base:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:
fr-CAFrench (Canada)Thyroxine.libre^Pré test:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FRFrench (France)Thyroxine libre^T0:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:
fr-BEFrench (Belgium)Thyroxine.libre^Pré test:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
Synonyms: ligne de base, avant test T4 T4L,fT4
it-ITItalian (Italy)Tiroxina.libera^baseline:MCnc:Pt:Siero/Plasma:Qn:
Synonyms: Concentrazione di Massa Plasma Punto nel tempo (episodio) Siero Siero o Plasma Test di provocazione Tiroxina libera
nl-NLDutch (Netherlands)thyroxine.vrij^uitgangswaarde:massa/volume:moment:serum of plasma:kwantitatief:
Synonyms: baseline
pl-PLPolish (Poland)Wolna tyroksyna^linia bazowa:stężenie masowe:punkt w czasie:surowica lub osocze:ilościowy:
Synonyms: poziom wyjściowy;punkt odniesienia
ru-RURussian (Russian Federation)Тироксин.свободный^момент начала отсчёта времени:МассКонц:ТчкВрм:Сыв/Плаз:Колич:
Synonyms: Количественный Массовая концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TRTurkish (Turkey)Tiroksin.serb^taban hattı:KütlKons:Zmlı:Ser/Plaz:Kant:
Synonyms: temel
zh-CNChinese (China)甲状腺素.游离型^基线:质量浓度:时间点:血清/血浆:定量型:
Synonyms: FT4 FT4;FT-4;T4.游离;T4.游离型;游离 T4;游离型 T4;游离型甲状腺素;游离甲状腺素;甲状腺素.游离 T4;T-4;四碘甲状腺原氨酸;四碘甲腺原氨酸;左旋四碘甲状腺原氨酸;左旋四碘甲腺原氨酸;左旋甲状腺氨酸;左旋甲状腺素;左旋甲状腺素（Levothyroxine，Levo-thyroxine，L-thyroxine）;甲状腺氨酸 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 基准;基准线;底线;零位线 时刻;随机;随意;瞬间 水平;浓度;质量浓度(单位体积) 游离 游离T4 游离四碘甲状腺原氨酸 游离型四碘甲状腺原氨酸 游离甲状腺素 血清或血浆 非蛋白结合型 非蛋白质结合型

Example Units

UnitSource
ng/dLExample UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=58838-4