4.7 Article

Comparison of potential higher order reference methods for total haemoglobin quantification-an interlaboratory study

期刊

ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 409, 期 9, 页码 2341-2351

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s00216-016-0176-7

关键词

Haemoglobin; Reference method; HiCN; Isotope dilution; Raman spectroscopy; Mass spectrometry

资金

  1. European Union [912/2009/EC, HLT-05 2012]
  2. EMRP within EURAMET
  3. EMRP within European Union

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The total haemoglobin (Hb) concentration in blood is one of the most frequently measured analytes in clinical medicine because of its significance for evaluating the health state of a human. The spectrophotometric cyanmethaemoglobin (HiCN) method is the internationally accepted conventional reference method to determine this biomarker. It is frequently used in clinical routine diagnostics but is not traceable to the International System of Units and thus does not meet highest metrological demands. A further critical issue is the toxicity of the necessary potassium cyanide. Different methods to solve these problems are reported here. They all were validated against the HiCN method in an interlaboratory comparison by measuring the total Hb concentration present in the certified reference material JCCRM 912-2M. Methods considered were the spectrophotometric alkaline haematin detergent (AHD) method as well as several isotope dilution (ID)-based approaches. The latter include inductively coupled plasma mass spectrometry (ICP-MS), species-specific (SS) ICP-MS, organic MS and Raman spectrometry.

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