Reference values for a homogeneous Ferritin assay and traceability to the 3rd International Recombinant Standard for Ferritin (NIBSC code 94/572)

Clinical Chemistry and Laboratory Medicine : CCLM
J LotzW Prellwitz

Abstract

Reference values for two ferritin assays (Tina-quanta Ferritin, Enzymun, both Roche Diagnostics, Mannheim, Germany) were established (136 males and 139 females). To rule out inflammation as well as iron deficiency in the reference population, subjects with the C-reactive protein concentration < 5 mg/l, and zinc protoporphyrin < 40 micromol/mol heme and the soluble transferrin receptor < 3 mg/l were selected. Taking into account latent iron deficiency as well as hereditary hemochromatosis the 5-95 percentile range was as follows: male, 27-365 microg/l; female, 13-148 microg/l for Tina-quanta and 12-151 microg/l for Enzymun. The Tina-quanta Ferritin assay showed a very good correlation (r > or = 0.990) to Enzymun ferritin, Ferritin Abbott (Abbott Diagnostics, Delkenheim, Germany), N Latex Ferritin (Dade Behring, Marburg, Germany) and the Ferritin Chiron (Chiron Diagnostics, Fernwald, Germany). However, the slopes of the standard principal component method analysis were calculated to be between 1.03 (Enzymun) and 1.41 (N Latex Ferritin). For four assays the median recovery of the 3rd International Recombinant Ferritin Standard (NIBSC 94/572) measured by serial dilution was 89-109%. The N Latex Ferritin assay recovered half of the ...Continue Reading

References

Jan 1, 1993·Annual Review of Medicine·J D CookR D Baynes
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Dec 15, 2010·Clinical Chemistry and Laboratory Medicine : CCLM·Christian ThomasLothar Thomas
Feb 15, 2014·Clinica Chimica Acta; International Journal of Clinical Chemistry·Federica BragaMauro Panteghini
Mar 21, 2012·Journal of Women's Health·Ken MuseTammie L Adomako
Jun 25, 2009·Clinica Chimica Acta; International Journal of Clinical Chemistry·Matthias HeidukGerhard Klein
Sep 28, 2010·International Journal of Laboratory Hematology·C ThomasL Thomas
Sep 8, 2011·Hepatology : Official Journal of the American Association for the Study of Liver Diseases·Tobias J WeismüllerChristian P Strassburg
Dec 11, 2017·Sleep & Breathing = Schlaf & Atmung·Elin H ThorarinsdottirBrendan T Keenan
Mar 24, 2020·British Journal of Cancer·Heidi Jaksch-BogenspergerNikolaus Bresgen
Jan 20, 2021·Scandinavian Journal of Clinical and Laboratory Investigation·Arne ÅsbergAnn Elisabeth Åsberg

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