Version 2.80

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

Fully-Specified Name

Component
Thyroxine.free^baseline
Property
ACnc
Time
Pt
System
Ser/Plas
Scale
Qn
Method

Additional Names

Long Common Name
Thyroxine (T4) free [Units/volume] in Serum or Plasma --baseline
Short Name
T4 Free BS SerPl-aCnc
Display Name
Free T4 baseline Qn
Consumer Name Alpha Get Info
Free T4 baseline, Blood

Basic Attributes

Class
CHAL
Type
Laboratory
First Released
Version 2.00
Last Updated
Version 2.42 (MIN)
Order vs. Observation
Observation

Language Variants Get Info

Tag Language Translation
el-GR Greek (Greece) Θυροξίνη.ελεύθερη^τιμή αναφοράς:ACnc:Pt:Ορός/Πλάσμα:Qn:
Synonyms: ACnc
es-AR Spanish (Argentina) tiroxina.libre^basal:concentración arbitraria:punto en el tiempo:suero/plasma:cuantitativo:
es-ES Spanish (Spain) Tiroxina libre^Basal:Concentración arbitraria:Punto temporal:Suero o Plasma:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Thyroxine.libre ^ línea de base:Concentración arbitraria:Punto temporal:Suero o Plasma:Cuantitativo:
fr-CA French (Canada) Thyroxine.libre^Pré test:Concentration arbitraire:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FR French (France) Thyroxine libre T0:Arbitraire/Volume:Ponctuel:Sérum/Plasma:Numérique:
fr-BE French (Belgium) Thyroxine.libre^Pré test:Concentration arbitraire:Temps ponctuel:Sérum/Plasma:Quantitatif:
Synonyms: ligne de base, avant test T4 T4L,fT4
it-IT Italian (Italy) Tiroxina.libera^baseline:ACnc:Pt:Siero/Plasma:Qn:
Synonyms: Concentrazione Arbitraria Plasma Punto nel tempo (episodio) Siero Siero o Plasma Test di provocazione Tiroxina libera
ko-KR Korean (Korea, Republic Of) 유리티록신^기저검사:임의농도:검사시점:혈청/혈장:정량:
nl-NL Dutch (Netherlands) thyroxine.vrij^uitgangswaarde:eenheid/volume:moment:serum of plasma:kwantitatief:
Synonyms: baseline
pt-BR Portuguese (Brazil) Tiroxina.livre^basal:ACnc:Pt:Sor/Plas:Qn:
Synonyms: ; T4 Free; T-4; FreeT4; Thyrox; Thyrx; Thyroxin; Levothyroxine; Levo-thyroxine; L-thyroxine; BS; Arbitrary concentration; Point in time; Random; SerPl; SerPlas; SerP; Serum; SR; Plasma; Pl; Plsm; Quantitative; QNT; Quant; Quan; FT4; FR; Non-protein bound; CHEMISTRY.CHALLENGE TESTING; CHEMISTRY.CHALLENGE TESTING
ru-RU Russian (Russian Federation) Тироксин.свободный^момент начала отсчёта времени:ПроизвКонц:ТчкВрм:Сыв/Плаз:Колич:
Synonyms: Количественный Плазма Произвольная концентрация Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TR Turkish (Turkey) Tiroksin.serb^taban hattı:SçKons:Zmlı:Ser/Plaz:Kant:
zh-CN Chinese (China) 甲状腺素.游离型^基线:任意型浓度: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 任意型浓度(单位体积);任意浓度;单位体积的任意单位数;人工型浓度 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 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

Unit Source
m[IU]/L Example UCUM Units

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=27987-7