Clinical Chemistry

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Outliers in clinical chemistry quality-control schemes.
Clinical Chemistry - Tập 25 Số 5 - Trang 675-677 - 1979
M. J. R. Healy
Abstract Results submitted to large-scale quality-control schemes are commonly judged against the mean and standard deviation (SD) of the results from other laboratories. It is desirable to ignore outlying values in estimating this mean and standard deviation, and results more than 2.5 or 3 SD from the mean are commonly rejected. I show that an outli...... hiện toàn bộ
Standardization in peptide hormone immunoassays: principle and practice.
Clinical Chemistry - Tập 22 Số 7 - Trang 957-963 - 1976
D. R. Bangham
High-Resolution Genotyping by Amplicon Melting Analysis Using LCGreen
Clinical Chemistry - Tập 49 Số 6 - Trang 853-860 - 2003
Carl T. Wittwer, G. H. Reed, Cameron N. Gundry, Joshua G Vandersteen, Rob Pryor
AbstractBackground: High-resolution amplicon melting analysis was recently introduced as a closed-tube method for genotyping and mutation scanning (Gundry et al. Clin Chem 2003;49:396–406). The technique required a fluorescently labeled primer and was limited to the detection of mutations residing in the melting domain of the labeled primer. Our aim was to develop ...... hiện toàn bộ
Serum catalase enzyme activity in acute pancreatitis.
Clinical Chemistry - Tập 28 Số 9 - Trang 1999-2000 - 1982
László Góth, I Mészáros, H Németh
Quantitative Identification of Urinary Calculi
Clinical Chemistry - Tập 1 Số 4 - Trang 241-248 - 1955
Reid H. Leonard, Arthur J. Butt
Abstract Quantitative determination of calcium, phosphorus, and oxalic acid, assisted by occasional determination of ammonia nitrogen and insoluble nitrogen when indicated by qualitative tests, provides a means of computing the component substances of calculi. The determinations may be performed by slight modifications of the methods in use in the ro...... hiện toàn bộ
Model System for Phenotypic Characterization of Sequence Variations in the LDL Receptor Gene
Clinical Chemistry - Tập 52 Số 8 - Trang 1469-1479 - 2006
Trine Ranheim, Mari Ann Kulseth, Knut Erik Berge, Trond P. Leren
AbstractBackground: Sequence variations in the LDL receptor (LDLR) gene cause defects of LDLR protein production and function through different molecular mechanisms. Here we describe a cell model system for the phenotypic characterization of sequence variations in the LDLR gene. Well-known sequence variations belonging to LDLR classes 2 to 5 (p.G565V, p.I161D, p.Y8...... hiện toàn bộ
Simplified isoelectric focusing/immunoblotting determination of apoprotein E phenotype
Clinical Chemistry - Tập 40 Số 1 - Trang 11-13 - 1994
Shinkuro Kataoka, M Paidi, Barbara V. Howard
Abstract We developed a rapid, accurate method for phenotyping apoprotein E that can be used for large-scale population studies. In this method, adapted from the method of Kamboh et al. (J Lipid Res 1988;29:1535-43), 10-microL plasma samples are incubated with dithiothreitol and Tween-20 for 15 min and then applied to 5% polyacrylamide gels containin...... hiện toàn bộ
Serum Creatinine as an Index of Renal Function: New Insights into Old Concepts
Clinical Chemistry - Tập 38 Số 10 - Trang 1933-1953 - 1992
Ronald D. Perrone, Nicolaos E. Madias, Andrew S. Levey
Abstract The serum creatinine concentration is widely interpreted as a measure of the glomerular filtration rate (GFR) and is used as an index of renal function in clinical practice. Glomerular filtration of creatinine, however, is only one of the variables that determines its concentration in serum. Alterations in renal handling and metabolism of cr...... hiện toàn bộ
Radioreceptor Assay for Quantifying FK-506 Immunosuppressant in Whole Blood
Clinical Chemistry - Tập 38 Số 7 - Trang 1307-1310 - 1992
Jayasimha N. Murthy, Yongjun Chen, V Warty, R. Venkataramanan, James G. Donnelly, A Zeevi, Steven J. Soldin
Abstract We describe a quantitative radioreceptor assay (RRA) for quantifying FK-506 in whole blood. FK-506 extracted from whole blood with a cyclohexyl-sorbent column competes with [3H]dihydro-FK-506 for binding to a partially purified preparation of FK-506 binding protein (FK-BP). Free and protein-bound FK-506 are separated on LH 20 Sephadex chroma...... hiện toàn bộ
Lack of Concordance between the 75-g and 100-g Glucose Load Tests for the Diagnosis of Gestational Diabetes Mellitus
Clinical Chemistry - Tập 52 Số 9 - Trang 1679-1684 - 2006
Giorgio Mello, Elena Parretti, Agostino Ognibene, Riccardo Cioni, Tondi Filippo, Paola Pezzati, Monica Pratesi, Gianfranco Scarselli, Gianni Messeri
Abstract Background: Gestational diabetes mellitus (GDM) is common and can have a substantial impact on fetal growth, birth weight, and morbidity. The American Diabetes Association recommends GDM testing with either a 3-h, 100-g glucose load (100g) (criteria according to Am J Obstet Gynecol 1982;144:768–73) or a 2-h, 75-g glucose load (75g). We inves...... hiện toàn bộ
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