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N-terminal pro-brain natriuretic peptide (NT-proBNP) and BNP measurement could have a significant role in differentiating dyspnea between cardiac or pulmonary origin in the emergency room. The development of new and different commercial assays for these B-type natriuretic peptides offers the possibility of improving and simplifying their measurements but(More)
BACKGROUND New erythrocyte parameters are reported by the Sysmex XE 5000 analyzer. This instrument measures the hemoglobin (Hb) content of individual red cells, calculates the percentage of hypochromic red cells (%Hypo He) and the percentage of hyperchromic red cells (%Hyper He) and quantifies the proportion of marginally sized erythrocytes (%Micro R and(More)
The levels and distribution of serum Cu and Zn were studied in patients diagnosed with acute myocardial infarction from the day of admission to the Cardiovascular Intensive Care Unit until the 10th day following the attack. The results obtained show that Cu increases significantly (p < 0.01) after the 5th day after the acute myocardial infarction, while Zn(More)
The prevalence of antibodies against the hepatitis C virus (anti-HCV) in patients seropositive for rheumatoid arthritis (RA) and suffering from this disease has been analyzed in comparison to a control group. Our results suggest that the high rate of prevalence found in RA patients is due to IgG interference in the measuring method used.
Cell counter-based formulas have been used in the differential diagnosis of microcytic anemia. The measurement of RBC subpopulations is now available on the Sysmex XE 5000 analyzer (Sysmex, Kobe, Japan). We describe the new formulas: % microcytic - % hypochromic; and % microcytic - % hypochromic - red cell distribution width (RDW), derived from the(More)
INTRODUCTION Consequence of the imbalance between the erythroid marrow iron requirements and the actual supply is a reduction in red cell hemoglobin content, which causes hypochromic mature red cells and reticulocytes. Sysmex XE 5000 analyzer (Sysmex Corporation, Kobe, Japan) reports reticulocyte hemoglobin equivalent (Ret-He) and the percentages of(More)
Cell counter-based formulae have been used in the differential diagnosis of microcytic anemia. The measurement of new red cell parameters is now available on the Sysmex XE 5000 analyzer. Derived from the percentages of microcytic and hypochromic red cells, the authors describe the new formula %microcytic-%hypochromic, M-H index. The aim of this study was to(More)
We have developed a new procedure for turbidimetric measurement of ferritin concentration in human serum, based on latex microparticle agglutination technology. The procedure has been automated using the Falcor 300 analyzer. Carboxilated latex particles (336 nm in diameter) were covalently coupled with immunopurified F(ab')2 fragments of anti-ferritin IgG(More)
We have developed a sensitive immunoassay based on latex particle agglutination for measuring C1q concentrations in human plasma. In this simple and fast particle-enhanced immunoassay, we used carboxylated latex particles (diameter 210 nm) covalently coated with F(ab')2 fragments of anti-C1q antibodies. These particles are incubated with diluted sample(More)