Background: Rapid technological progress in point-of-care testing allows the measurement
of multiple analytes in whole-blood samples. The present study evaluated biosensor-based …

Introduction: For the last few decades, electrolyte determinations in plasma or serum are
carried out by reliable potentiometric methods. In recent years, a marked technical evolution …

We have identified rare (approximately 0.2% of all samples), but clinically significant,
discrepancies between serum or plasma sodium concentrations measured with the Kodak …

Background: Devices employing electrochemistry-based correction algorithms (EBCAs) are
optimized for patient use and require special handling procedures when tested in the …

Blood electrolyte concentrations are tightly controlled by homeostatic mechanisms, with a
very low intraindividual biological variability [1]. To be clinically useful, measurement results …

Abstract The Konelab 20XT (Thermo Electron Oy, Finland) is a clinical chemistry analyzer for
colorimetric, immunoturbidimetric and ion-selective electrode measurements. The aim of our …

Objectives We aim to report the simultaneous effect of different protein and lipid
concentrations on sodium (Na+) and potassium (K+) measurement by direct and indirect ion …

(NOVA Biomedical, Waltham, MA 02254-9141) is one of the first commercially available
direct (nondiluting) ion-selective electrode analyzers for measuring sodium, potassium, and …

In clinical chemistry quality control refers to monitoring of precision and accuracy of the
performance of analytical methods. Calibration solutions and (matrixed) control solutions are …

Background Serum creatinine values of patients tend to change as a result of the use of
different blanks used for creatinine determinations on the Advia 1650. After upgrading the …