'All that glisters is not gold': Ultrafiltration and free thyroxine measurement
Autor: | John E.M. Midgley |
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Rok vydání: | 2011 |
Předmět: | |
Zdroj: | Clinical Biochemistry. 44:151-153 |
ISSN: | 0009-9120 |
DOI: | 10.1016/j.clinbiochem.2010.11.001 |
Popis: | Objective To examine the merits of measuring free analytes by ultrafiltration using either diluted or undiluted serum. Results Confidence in the accuracy of measurements is affected both by problems identified in current systems using semipermeable membranes, the sensitivity of the system to artefacts and comparisons with other imperfect assays. Conclusion All “gold standard” methods must robustly obey sound physicochemical principles if valid conclusions are to be drawn. |
Databáze: | OpenAIRE |
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