Version 2.78

3026-2 Thyroxine (T4) [Mass/volume] in Serum or Plasma

Part Descriptions

LP15900-1   Thyroxine
The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosine (monoiodotyrosine) and the coupling of iodotyrosine (diiodotyrosine) in thyroglobulin. Thyroxine is separated from thyroglobulin by proteolysis and released in the blood. Thyroxine is peripherally deiodinated to form triiodothyronine which exerts broad stimulatory effects on cell metabolism. Source: National Library of Medicine, MeSH 2006

Fully-Specified Name

Component
Thyroxine
Property
MCnc
Time
Pt
System
Ser/Plas
Scale
Qn
Method

Additional Names

Panel Name
Short Name
T4 SerPl-mCnc
Display Name
T4 [Mass/Vol]
Consumer Name Alpha Get Info
T4, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.73
Order vs. Observation
Both
Common Test Rank Get Info
394

Member of these Panels

LOINC Long Common Name
90224-7 Thyroxine and Thyroxine.free panel - Serum or Plasma
48073-1 Thyroxine binding globulin panel [Mass/volume] - Serum or Plasma by Electrophoresis

Member of these Groups Get Info

LOINC Group Group Name
LG12009-3 Thyroxine|MCnc|Pt|ANYBldSerPl
LG46307-1 Thyroxine|Pt|Ser/Plas|776.874 g/mole

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Thyroxin:Massenkonzentration:Zeitpunkt:Serum oder Plasma:Quantitativ:
de-AT German (Austria) Synonyms: T4
el-GR Greek (Greece) Θυροξίνη:Συγκέντρωση μάζας:Χρονική στιγμή:Ορός/Πλάσμα:Ποσοτική:
Synonyms: Τ4
es-MX Spanish (Mexico) Tiroxina:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:
es-ES Spanish (Spain) Tiroxina:Concentración de masa:Punto temporal:Suero o Plasma:Qn:
Synonyms: Cuantitativo
es-AR Spanish (Argentina) tiroxina:concentración de masa:punto en el tiempo:suero/plasma:cuantitativo:
et-EE Estonian (Estonia) Türoksiin:MCnc:Pt:S/P:Qn:
Synonyms: Juhuslik Kvantitatiivne Plasma Seerum Seerum või plasma
fr-BE French (Belgium) Thyroxine:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
Synonyms: T4
fr-FR French (France) Thyroxine:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:
fr-CA French (Canada) Thyroxine:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
it-IT Italian (Italy) Tiroxina:MCnc:Pt:Siero/Plasma:Qn:
Synonyms: Chimica Concentrazione di Massa Plasma Punto nel tempo (episodio) Siero Siero o Plasma
ko-KR Korean (Korea, Republic Of) 티록신:질량농도:검사시점:혈청/혈장:정량:
nl-NL Dutch (Netherlands) thyroxine:massa/volume:moment:serum of plasma:kwantitatief:
pl-PL Polish (Poland) Tyroksyna:stężenie masowe:punkt w czasie:surowica lub osocze:ilościowy:
pt-BR Portuguese (Brazil) Tiroxina:MCnc:Pt:Sor/Plas:Qn:
Synonyms: ; T4; T-4; 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; Chemistry
ru-RU Russian (Russian Federation) Тироксин:МассКонц:ТчкВрм:Сыв/Плаз:Колич:
Synonyms: Количественный Массовая концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TR Turkish (Turkey) Tiroksin:KütlKons:Zmlı:Ser/Plaz:Kant:
uk-UA Ukrainian (Ukraine) Тироксин:Масова Концентрація:МоментЧасу:Сироватка/Плазма:Кількісно:
Synonyms: Chemistry; Endocrine; Endocrinology; Level; Levothyroxine; Levo-thyroxine; L-thyroxine; Mass concentration; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; T4; T-4; thyroid hormone; Thyrox; Thyroxin; Thyrx; Total T4; TT4; UniversalLabOrders
zh-CN Chinese (China) 甲状腺素:质量浓度:时间点:血清/血浆:定量型:
Synonyms: 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) 血清或血浆

Example Units

Unit Source
ug/dL Example UCUM Units
mcg/dL REGENSTRIEF

3024-7 Thyroxine (T4) free [Mass/volume] in Serum or Plasma

Part Descriptions

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

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright © 2021 Lab Tests Online. All rights reserved. T4, Free

Fully-Specified Name

Component
Thyroxine.free
Property
MCnc
Time
Pt
System
Ser/Plas
Scale
Qn
Method

Additional Names

Panel Name
Short Name
T4 Free SerPl-mCnc
Display Name
Free T4 [Mass/Vol]
Consumer Name Alpha Get Info
Free T4, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.73
Order vs. Observation
Both
Common Test Rank Get Info
134

Member of these Panels

LOINC Long Common Name
24348-5 Free T4 and TSH panel - Serum or Plasma
90224-7 Thyroxine and Thyroxine.free panel - Serum or Plasma

Member of these Groups Get Info

LOINC Group Group Name
LG12004-4 Thyroxine.free|MCnc|Pt|ANYBldSerPl
LG49672-5 Thyroxine.free|Pt|Ser/Plas

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: Freies T4
de-DE German (Germany) Thyroxin.frei:Massenkonzentration:Zeitpunkt:Serum oder Plasma:Quantitativ:
Synonyms: fT4
el-GR Greek (Greece) Θυροξίνη ελεύθερη:Συγκέντρωση μάζας:Χρονική στιγμή:Ορός/Πλάσμα:Ποσοτική:
Synonyms: Ελεύθερη Τ4 Τ4
es-AR Spanish (Argentina) tiroxina.libre:concentración de masa:punto en el tiempo:suero/plasma:cuantitativo:
es-MX Spanish (Mexico) Thyroxine.libre:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:
es-ES Spanish (Spain) Tiroxina libre:Concentración de masa:Punto temporal:Suero o Plasma:Qn:
Synonyms: Cuantitativo
et-EE Estonian (Estonia) Türoksiin.vaba:MCnc:Pt:S/P:Qn:
Synonyms: Juhuslik Kvantitatiivne Plasma Seerum Seerum või plasma
fr-FR French (France) Thyroxine libre:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:
fr-CA French (Canada) Thyroxine.libre:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-BE French (Belgium) Thyroxine.libre:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
Synonyms: T4 T4L,fT4
it-IT Italian (Italy) Tiroxina.libera:MCnc:Pt:Siero/Plasma:Qn:
Synonyms: Chimica Concentrazione di Massa Plasma Punto nel tempo (episodio) Siero Siero o Plasma Tiroxina libera
ko-KR Korean (Korea, Republic Of) 유리티록신:질량농도:검사시점:혈청/혈장:정량:
nl-NL Dutch (Netherlands) thyroxine.vrij:massa/volume:moment:serum of plasma:kwantitatief:
pl-PL Polish (Poland) Wolna tyroksyna:stężenie masowe:punkt w czasie:surowica lub osocze:ilościowy:
pt-BR Portuguese (Brazil) Tiroxina.livre:MCnc:Pt:Sor/Plas:Qn:
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; FT4; FR; Non-protein bound; Chemistry
ru-RU Russian (Russian Federation) Тироксин.свободный:МассКонц:ТчкВрм:Сыв/Плаз:Колич:
Synonyms: Количественный Массовая концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TR Turkish (Turkey) Tiroksin.serb:KütlKons:Zmlı:Ser/Plaz:Kant:
uk-UA Ukrainian (Ukraine) Тироксин.вільний:Масова Концентрація:МоментЧасу:Сироватка/Плазма:Кількісно:
Synonyms: Chemistry; 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-CN Chinese (China) 甲状腺素.游离型: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 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) 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
ng/dL Example UCUM Units
ng/dL REGENSTRIEF