Title: Multicenter evaluation of a fully mechanized soluble transferrin receptor assay on the Hitachi and cobas integra analyzers. the determination of reference ranges
Authors: Kolbe-Busch, Susanne ×
Lotz, Johannes
Hafner, Gerd
Blanckaert, Norbert
Claeys, Georg
Togni, Giovanni
Carlsen, Jürgen
Röddiger, Ralf
Thomas, Lothar #
Issue Date: May-2002
Series Title: Clinical chemistry and laboratory medicine : CCLM / FESCC vol:40 issue:5 pages:529-36
Abstract: Soluble transferrin receptor (sTfR) is reported to be a reliable marker for the diagnosis of iron deficiency, especially when iron metabolism is influenced by inflammatory disorders such as infection, chronic inflammation and cancer-related anemia. In the present multicenter study the analytical performance of a recently introduced, latex-enhanced immunoturbidimetric assay for the determination of soluble transferrin receptor (Tina quant [a] sTfR, Roche Diagnostics) on different fully mechanized analyzers such as Hitachi 917 and 911, and Cobas Integra 400 and 700 was evaluated. Within-run and between-run imprecision showed good results (CV<5% and <7%, respectively). The assay was found to be linear over a wide measuring range (0.4-35 mg/l). Endogenous substances did not interfere with the test results. Comparison of serum sTfR concentrations with those of heparinized plasma revealed good correlation (r>0.976). Method comparison with an existing fully mechanized method as well as with ELISA tests for sTfR showed very good correlation (r>0.987). Because of the lack of international standardization the results differed from each other up to 2.5-fold. The 95% of serum levels in healthy individuals ranged from 1.9 to 4.4 mg/l (n=427). However, the reference ranges should be reported in a sex-dependent manner, as 2.2-5.0 mg/l for men (n=211) and as 1.9-4.4 mg/l for premenopausal (n=216) and postmenopausal (n=45) women. The Tina quant [a] sTfR assay enables the precise, accurate, rapid and convenient determination of sTfR concentrations for routine clinical chemistry purposes.
ISSN: 1434-6621
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory of Clinical Bacteriology and Mycology
Department of Imaging & Pathology - miscellaneous
× corresponding author
# (joint) last author

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