Sodium and potassium were measured in sets of 102 to 107 patients sera, and in 31
commercially available control sera. The results from four routine analytical …

With the pending new CLIA regulations, the issue of standardization has become more
important. AACC's efforts in the areas of standardization and development of standard …

Abstract The Stanbio and Medi-Chem sodium and potassium kits were evaluated and the
results compared with those obtained with the Coleman Jr. Model 21, NIL 4-7000, and …

The International Federation of Clinical Chemistry (FCC) and the National Committee for
Clinical Laboratory Standards (NCCLS) are about to recommend to adjust sodium and …

Materials and Methods Direct potentiometric analysis of sodium and potassium was done
with an Orion SS/30 sodium/potassium analyzer (Orion Biomedical, Inc., 11 Blackstone St …

We compared the quality of reference measurements for serum potassium in four reference
laboratories from three different European countries, using a panel of 60 native patients' …

An automated analyzer, in which ion-selective electrodes are used to measure sodium,
potassium, and chloride in serum, was assessed in a clinical setting. Day-to-day precision …

American Hospital Supply (UK) Ltd., Didcot, Oxon. An instrument supplied for a trial period in
our laboratory produced results for plasma and serum so-dium that differed significantly from …

We carried out a statistically designed, multilaboratory study to evaluate a flame atomic
emission spectroscopic (FAES) method for serum sodium as a Reference Method. definitive …

With electrolyte reference fluid (ERF) 00, results from Kodak Ektachem slides for the direct
potentiometric assay of sodium in plasma were significantly correlated with results from …