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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:SCnc:Pt:Bld.dot:Qn:
Long Common Name
Thyroxine (T4) free [Moles/volume] in DBS
Short Name
T4 Free DBS-sCnc
Display Name
Free T4 (DBS) [Moles/Vol]
Consumer Name Alpha Get Info
Free T4, Dried blood spot

Part Model Get Info

  • Component
    Thyroxine.free
    LP29119-2
    • 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
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    SCnc
    LP6860-3
  • Time
    Pt
    LP6960-1
  • System
    Bld.dot
    LP21304-8
    • System Core
      Bld.dot
      LP21304-8
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NULL
     

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.24
Last Updated
Version 2.70 (MIN)
Order vs. Observation
Both

Member of these Groups Get Info

LOINC GroupGroup Name
LG49673-3Thyroxine.free|Pt|Bld.dot

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Tyroxin volný:Látková koncentrace:Časový bod:Suchá krevní kapka (DBS):Kvantitativní:
el-GRGreek (Greece)Θυροξίνη.ελεύθερη:SCnc:Pt:Bld.dot:Qn:
Synonyms: Bld.dot CHEM Pt Qn SCnc Αίμα Θυροξίνη Θυροξίνη.ελεύθερη
es-MXSpanish (Mexico)Thyroxine.libre:Concentración de sustancias:Punto temporal:DBS:Cuantitativo:
es-ESSpanish (Spain)Tiroxina libre:Concentración de sustancia:Punto temporal:gota de sangre (papel de filtro):Qn:
Synonyms: Cuantitativo
et-EEEstonian (Estonia)Türoksiin.vaba:SCnc:Pt:Vereplekk:Qn:
Synonyms: Aine kontsentratsioon Juhuslik Kvantitatiivne Veri
fr-CAFrench (Canada)Thyroxine.libre:Concentration de substance:Temps ponctuel:Sang sur papier filtre:Quantitatif:
fr-FRFrench (France)Thyroxine libre:Moles/Volume:Ponctuel:Sang buvard:Numérique:
fr-BEFrench (Belgium)Thyroxine.libre:Concentration de substance:Temps ponctuel:Sang sur papier filtre:Quantitatif:
Synonyms: T4 T4L,fT4
it-ITItalian (Italy)Tiroxina.libera:SCnc:Pt:Sangue.su carta da filtro:Qn:
Synonyms: Chimica Concentrazione di Sostanza Punto nel tempo (episodio) Sangue Spot sangue secco Tiroxina libera
nl-NLDutch (Netherlands)thyroxine.vrij:mol/volume:moment:gedroogde bloedspot:kwantitatief:
pl-PLPolish (Poland)Wolna tyroksyna:stężenie molowe:punkt w czasie:sucha kropla krwi:ilościowy:
pt-BRPortuguese (Brazil)Tiroxina.livre:SCnc:Pt:SgPapel:Qn:
Synonyms: ; T4 Free; T-4; FreeT4; Thyrox; Thyrx; Thyroxin; Levothyroxine; Levo-thyroxine; L-thyroxine; Substance concentration; Level; Point in time; Random; DBS; Filter paper; FP; Dried blood spot; Blood; WB; Whole blood; Quantitative; QNT; Quant; Quan; FT4; FR; Non-protein bound; Chemistry
ru-RURussian (Russian Federation)Тироксин.свободный:МолКонц:ТчкВрм:Кр.Сух.капл:Колич:
Synonyms: Количественный Кровь Кровь сухая капля Молярность;Молярная объёмная концентрация Точка во времени;Момент
tr-TRTurkish (Turkey)Tiroksin.serb:SubKons:Zmlı:Kan.nokta:Kant:
zh-CNChinese (China)甲状腺素.游离型:物质的量浓度:时间点:全血.斑点: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 克分子浓度;克分子浓度(单位体积);摩尔浓度;摩尔浓度(单位体积);物质的量浓度(单位体积) 全血斑点(滤纸);滤纸;血液.斑点;血液斑点(滤纸) 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 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;血液 非蛋白结合型 非蛋白质结合型

Example Units

UnitSource
nmol/LExample UCUM Units

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=53350-5