LOINC
Version 2.67

14920-3Thyroxine (T4) free [Moles/volume] in Serum or PlasmaActive

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. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Regenstrief Institute, Thyroxine (Wikipedia)

Fully-Specified Name

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

Additional Names

Short Name
T4 Free SerPl-sCnc
Display Name
Free T4 [Moles/Vol]

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0k
Last Updated
Version 2.34
Order vs. Observation
Both
Common SI Lab Results Rank
133
CDISC Lab Test
Yes

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright © 2001-2019 American Association for Clinical Chemistry T4, Free

Member of these Groups

LG49672-5 Thyroxine.free|Pt|Ser/Plas
LG2976-1 Thyroxine.free|SCnc|Pt|ANYBldSerPl

Language Variants Get Info

zh-CNChinese (CHINA)
甲状腺素.游离型:物质的量浓度:时间点:血清/血浆:定量型:
nl-NLDutch (NETHERLANDS)
thyroxine.vrij:mol/volume:moment:serum of plasma:kwantitatief:
et-EEEstonian (ESTONIA)
Türoksiin.vaba:SCnc:Pt:S/P:Qn:
fr-BEFrench (BELGIUM)
Thyroxine.libre:Concentration de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-CAFrench (CANADA)
Thyroxine.libre:Concentration de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FRFrench (FRANCE)
Thyroxine.free:SCnc:Pt:Ser/Plas:Qn:
fr-CHFrench (SWITZERLAND)
S--thyroxine libre
de-ATGerman (AUSTRIA)
Freies T4
de-DEGerman (GERMANY)
Thyroxin.frei:SKnz:Pkt:Ser/Plas:Qn:
de-CHGerman (SWITZERLAND)
S--Thyroxin, freies
el-GRGreek (GREECE)
Θυροξίνη ελεύθερη:Συγκέντρωση ουσίας:Χρονική στιγμή:Ορός/Πλάσμα:Ποσοτική:
it-ITItalian (ITALY)
Tiroxina.libera:SCnc:Pt:Siero/Plasma:Qn:
it-CHItalian (SWITZERLAND)
S--tirossina libera
ko-KRKorean (KOREA, REPUBLIC OF)
유리티록신:물질농도:검사시점:혈청/혈장:정량:
pt-BRPortuguese (BRAZIL)
Tiroxina.livre:SCnc:Pt:Sor/Plas:Qn:
ru-RURussian (RUSSIAN FEDERATION)
Тироксин.свободный:МолКонц:ТчкВрм:Сыв/Плаз:Колич:
es-ARSpanish (ARGENTINA)
tiroxina.libre:concentración de sustancia:punto en el tiempo:suero/plasma:cuantitativo:
es-ESSpanish (SPAIN)
Tiroxina libre:Concentración de sustancia:Punto temporal:Suero o Plasma:Qn:
es-CHSpanish (SWITZERLAND)
S--tiroxina libre
tr-TRTurkish (TURKEY)
Tiroksin.serb:SubKons:Zmlı:Ser/Plaz:Kant:

Example Units

Unit Source
pmol/L eCHN
pmol/L Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=14920-3