LOINC
Version 2.73

3051-0Triiodothyronine (T3) Free [Mass/volume] in Serum or PlasmaActive

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

Fully-Specified Name

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

Additional Names

Short Name
T3Free SerPl-mCnc
Display Name
Free T3 [Mass/Vol]
Consumer Name Alpha
Free T3, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.73
Order vs. Observation
Both
Common US Lab Results Rank
320
Common Orders Rank
121

Reference Information

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

Member of these Groups

LG11488-0 Triiodothyronine.free|MCnc|Pt|ANYBldSerPl
LG46407-9 Triiodothyronine.free|Pt|Ser/Plas

Language Variants Get Info

zh-CNChinese (China)
三碘甲状腺原氨酸.游离型:质量浓度:时间点:血清/血浆:定量型:
nl-NLDutch (Netherlands)
tri-iodothyronine.vrij:massa/volume:moment:serum of plasma:kwantitatief:
et-EEEstonian (Estonia)
Trijoodtüroniin.vaba:MCnc:Pt:S/P:Qn:
fr-BEFrench (Belgium)
Triiodothyronine.libre:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-CAFrench (Canada)
Triiodothyronine.libre:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FRFrench (France)
Triiodothyronine libre:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:
de-DEGerman (Germany)
Trijodthyronin.frei:Massenkonzentration:Zeitpunkt:Serum oder Plasma:Quantitativ:
el-GRGreek (Greece)
Τριιωδοθυρονίνη ελεύθερη:Συγκέντρωση μάζας:Χρονική στιγμή:Ορός/Πλάσμα:Ποσοτική:
it-ITItalian (Italy)
Triiodotironina.libera:MCnc:Pt:Siero/Plasma:Qn:
ko-KRKorean (Korea, Republic of)
유리삼요드티로닌:질량농도:검사시점:혈청/혈장:정량:
pl-PLPolish (Poland)
wolna trójjodotyronina:Stężenie masowe:Punkt w czasie:Surowica lub osocze:ilościowy:
pt-BRPortuguese (Brazil)
Triiodotironina.livre:MCnc:Pt:Sor/Plas:Qn:
ru-RURussian (Russian Federation)
Трийодтиронин.свободный:МассКонц:ТчкВрм:Сыв/Плаз:Колич:
es-ARSpanish (Argentina)
triyodotironina.libre:concentración de masa:punto en el tiempo:suero/plasma:cuantitativo:
es-MXSpanish (Mexico)
Triyodotironina libre:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:
es-ESSpanish (Spain)
Triiodotironina libre:Concentración de masa:Punto temporal:Suero o Plasma:Qn:
tr-TRTurkish (Turkey)
Triiyodotironin.serb:KütlKons:Zmlı:Ser/Plaz:Kant:

Example Units

Unit Source
ng/L eCHN
pg/mL Example UCUM Units
pg/dL REGENSTRIEF
pg/mL REGENSTRIEF

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=3051-0