Version 2.78

Term Description

This term was created for, but is not limited in use to, bioMerieux's VIDAS FT3 assay, which is intended for the quantitative measurement of free triiodothyronine (FT3) in human serum or plasma.
Source: Regenstrief LOINC

Part Description

LP29126-7   Triiodothyronine.free
Free T3 (free triiodothyronine) is a measure of free circulating T3, excluding that which is bound to carrier proteins. This provides a more accurate measure of T3 levels because the carrier proteins can increase or decrease in various conditions artificially inflating or shrinking the total T3. T3 is discriminating for diagnosing and/or following the treatment of hyperthyroidism. It is not very useful at the low range of concentrations, so is not very helpful in diagnosing hypothyroidism. The thyroid delivers 20 times more T4 than T3, so T4 is the more relevant analyte except in special cases. Source: Regenstrief Help

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright © 2021 Lab Tests Online. All rights reserved. T3 (Free and Total)

Fully-Specified Name

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

Additional Names

Short Name
T3Free SerPl IA-sCnc
Display Name
Free T3 IA [Moles/Vol]
Consumer Name Alpha Get Info
Free T3, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.58
Last Updated
Version 2.58
Order vs. Observation
Both

Member of these Groups Get Info

LOINC Group Group Name
LG46409-5 Triiodothyronine.free|Pt|Ser/Plas|IA
LG2984-5 Triiodothyronine.free|SCnc|Pt|ANYBldSerPl

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Trijodthyronin.frei:Stoffmengenkonzentration:Zeitpunkt:Serum oder Plasma:Quantitativ:Immunoassay
Synonyms: fT3
el-GR Greek (Greece) Τριιωδοθυρονίνη ελεύθερη:Συγκέντρωση ουσίας:Χρονική στιγμή:Ορός/Πλάσμα:Ποσοτική:IA
Synonyms: Τ3
es-ES Spanish (Spain) Triiodotironina libre:Concentración de sustancia:Punto temporal:Suero o Plasma:Qn:IA
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Triyodotironina libre:Concentración de sustancias:Punto temporal:Suero o Plasma:Cuantitativo:Inmunoensayo
et-EE Estonian (Estonia) Trijoodtüroniin.vaba:SCnc:Pt:S/P:Qn:IA
Synonyms: Aine kontsentratsioon Juhuslik Kvantitatiivne Plasma Seerum Seerum või plasma
fr-CA French (Canada) Triiodothyronine.libre:Concentration de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:IA
fr-FR French (France) Triiodothyronine libre:Moles/Volume:Ponctuel:Sérum/Plasma:Numérique:Immunoanalyse
fr-BE French (Belgium) Triiodothyronine.libre:Concentration de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:IA
Synonyms: T3 T3L,fT3
it-IT Italian (Italy) Triiodotironina.libera:SCnc:Pt:Siero/Plasma:Qn:IA
Synonyms: Chimica Concentrazione di Sostanza Immunoassay Plasma Punto nel tempo (episodio) Siero Siero o Plasma T3 Triiodotironina Libera
nl-NL Dutch (Netherlands) tri-iodothyronine.vrij:mol/volume:moment:serum of plasma:kwantitatief:immunoassay
Synonyms: IA
pl-PL Polish (Poland) Wolna trójjodotyronina:stężenie molowe:punkt w czasie:surowica lub osocze:ilościowy:metoda immunologiczna
ru-RU Russian (Russian Federation) Трийодтиронин.свободный:МолКонц:ТчкВрм:Сыв/Плаз:Колич:IA
Synonyms: Количественный Молярность;Молярная объёмная концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TR Turkish (Turkey) Triiyodotironin.serb:SubKons:Zmlı:Ser/Plaz:Kant:İA
Synonyms: İmmünölçüm, immünoassay
zh-CN Chinese (China) 三碘甲状腺原氨酸.游离型:物质的量浓度:时间点:血清/血浆:定量型:免疫测定法
Synonyms: FT3;FT-3;T3;T-3;T3.游离;T3.游离型;T3Free;三碘甲状腺原氨酸.游离;三碘甲状腺氨酸.游离;三碘甲状腺氨酸.游离型;三碘甲腺原氨酸.游离;三碘甲腺原氨酸.游离型;游离 T3;游离型 T3;游离型三碘甲状腺原氨酸 FT3;T3;T-3;T3.游离;T3.游离型;三碘甲状腺原氨酸.游离;三碘甲状腺原氨酸.游离型;三碘甲状腺氨酸;三碘甲状腺氨酸.游离;三碘甲状腺氨酸.游离型;三碘甲腺原氨酸;三碘甲腺原氨酸.游离;三碘甲腺原氨酸.游离型;游离 T3;游离三碘甲状腺原氨酸;游离三碘甲状腺氨酸;游离三碘甲腺原氨酸;游离型 T3;游离型三碘甲状腺原氨酸;游离型三碘甲状腺氨酸;游离型三碘甲腺原氨酸;甲磺安 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) 免疫测定;免疫分析法;免疫检定法;免疫检定;免疫试验;酶免疫测定法;酶免疫测定;酶免疫分析法;酶免疫检定法;酶免疫检定;酶免疫试验 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 血清或血浆 非蛋白结合型 非蛋白质结合型

Example Units

Unit Source
pmol/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=83126-3