Accurate results
for patient care
Laboratory medicine and in vitro diagnostics

JCTLM Database: higher-order reference materials, methods and services

Details : C1RMS23 - total thyroxine (TT4) in Blood serum, Blood plasma

Type (acronym)rms
Typereference measurement service
Unique Nomination NumberC1RMS23
Reference Laboratory StatusUniversity laboratory related to the Belgian Metrological Institute (see nomination by Dr. Deckers &Nicolas, NGIII-Bd du Roi Albert II, 16, 1000 Brussels)
Analyte Nametotal thyroxine (TT4)
IUPAC IFCC Numbertotal thyroxine
Traceable to SIYes
Principle of Analytical ProcedureID-LC-MS/MS (for procedure: see publication)
Reference Method Listed in JCTLMYes
Name of JCTLM Listed Reference Method ProcedureU of Ghent reference measurement procedure for total T4
JCTLM Database Identifier NumberNRMeth 11
Procedure Difference in Your LaboratoryNo
QuantityAmount-of-substance concentration
From (0)25
To (0)300
Unit (0)nmol/L
From (1)1.75
To (1)3.5
Unit (1)%
Level of Confidence (%)95%
Comments on Uncertainty RangeThe expanded uncertainty is calculated for measurement protocol n = 6
Reference Procedure Status AcceptableYes
Laboratory Preparing for AccreditationYes
Survey OrganisationNetwork through European project G6RD-CT-2003-00587 (see: Clin Chem 51, 161-8 (2005))
Intercomparison Results Publicly AvailableYes
Link to Comparison ResultsRELA - IFCC External Quality assessment scheme for Reference Laboratories in Laboratory Medicine at AND http://www.dgkl-rfb.de:81/index.shtml
Reference to Published Comparison ResultsClinical Chemistry, 2005, 51, 161-168 Clinical Chemistry, 2005, 51, 2303-2311
Participation Status in Intercomparison Surveys acceptableYes
Recommended for Publication in the JCTLM ListYes
RMS Provider Comment in Case of DelistingService re-instated after receipt of the copy of their accreditation certificate on 05 April 2013
Organization AcronymUGent - Ref4U
Organization NameLaboratory of Toxicology, Faculty of Pharmaceutical Sciences, Ghent University
Organization Websitehttps://www.ugent.be/fw/bioanalysis/en/research/toxicology/services/ref4u.htm
Organization Country ISO CodeBE
Organization Country NameBelgium
Analyte Category NameNon-peptide hormones