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

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
    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
    Dialysis
    LP6226-7

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0h(2)
Last Updated
Version 2.73 (MIN)
Order vs. Observation
Both
Common Test Rank Get Info
1831

Member of these Groups Get Info

LOINC GroupGroup Name
LG12004-4Thyroxine.free|MCnc|Pt|ANYBldSerPl
LG49674-1Thyroxine.free|Pt|Ser/Plas|Dialysis

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Tyroxin volný:Hmotnostní koncentrace:Časový bod:Sérum/plazma:Kvantitativní:Dialýza
de-DEGerman (Germany)Thyroxin.frei:Massenkonzentration:Zeitpunkt:Serum oder Plasma:Quantitativ:Dialyse
Synonyms: fT4
el-GRGreek (Greece)Θυροξίνη.ελεύθερη:MCnc:Pt:Ορός/Πλάσμα:Qn:Αιμοκάθαρση
Synonyms: CHEM MCnc Pt Qn Αιμοκάθαρση Θυροξίνη Θυροξίνη.ελεύθερη Ορός Ορός/Πλάσμα Πλάσμα
es-ARSpanish (Argentina)tiroxina.libre:concentración de masa:punto en el tiempo:suero/plasma:cuantitativo:diálisis
es-ESSpanish (Spain)Tiroxina libre:Concentración de masa:Punto temporal:Suero o Plasma:Qn:Dialisis
Synonyms: Cuantitativo
es-MXSpanish (Mexico)Thyroxine.libre:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:Diálisis
et-EEEstonian (Estonia)Türoksiin.vaba:MCnc:Pt:S/P:Qn:Dialüüs
Synonyms: Juhuslik Kvantitatiivne Plasma Seerum Seerum või plasma
fr-FRFrench (France)Thyroxine libre:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:Dialyse
it-ITItalian (Italy)Tiroxina.libera:MCnc:Pt:Siero/Plasma:Qn:Dialisi
Synonyms: Chimica Concentrazione di Massa Plasma Punto nel tempo (episodio) Siero Siero o Plasma Tiroxina libera
ko-KRKorean (Korea, Republic Of)유리티록신:질량농도:검사시점:혈청/혈장:정량:투석
nl-NLDutch (Netherlands)thyroxine.vrij:massa/volume:moment:serum of plasma:kwantitatief:dialyse
pl-PLPolish (Poland)Wolna tyroksyna:stężenie masowe:punkt w czasie:surowica lub osocze:ilościowy:dializa
pt-BRPortuguese (Brazil)Tiroxina.livre:MCnc:Pt:Sor/Plas:Qn:Diálise
Synonyms: ; T4 Free; T-4; FreeT4; Thyrox; Thyrx; Thyroxin; Levothyroxine; Levo-thyroxine; L-thyroxine; Mass concentration; Level; Point in time; Random; SerPl; SerPlas; SerP; Serum; SR; Plasma; Pl; Plsm; Quantitative; QNT; Quant; Quan; Dialy; FT4; FR; Non-protein bound; Chemistry
ru-RURussian (Russian Federation)Тироксин.свободный:МассКонц:ТчкВрм:Сыв/Плаз:Колич:Диализ
Synonyms: Количественный Массовая концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TRTurkish (Turkey)Tiroksin.serb:KütlKons:Zmlı:Ser/Plaz:Kant:Diyaliz
uk-UAUkrainian (Ukraine)Тироксин.вільний:Масова Концентрація:МоментЧасу:Сироватка/Плазма:Кількісно:Діаліз
Synonyms: Chemistry; Dialy; Endocrine; Endocrinology; FR; FreeT4; FT4; Level; Levothyroxine; Levo-thyroxine; L-thyroxine; Mass concentration; Non-protein bound; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; T4; T-4; T4 Free; thyroid hormone; Thyrox; Thyroxin; Thyrx; Total T4; TT4; UniversalLabOrders
zh-CNChinese (China)甲状腺素.游离型:质量浓度:时间点:血清/血浆:定量型:透析法
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 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 水平;浓度;质量浓度(单位体积) 渗析 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 血透 透析 透析;渗析;肾脏透析;肾透析;血液透析;血透 非蛋白结合型 非蛋白质结合型

Example Units

UnitSource
ng/dLExample UCUM Units
ng/dLREGENSTRIEF

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=6892-4