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pro vyhledávání: '"C W, Weykamp"'
Publikováno v:
Clinical chemistry. 45(3)
Publikováno v:
Clinical chemistry. 43(4)
Hb A1c is the analyte of choice for monitoring metabolic control in patients with diabetes mellitus. Here we present a new analytical technique for measuring Hb A1c, capillary electrophoresis. The Hb A1c determination is not influenced by the labile
Autor:
C W, Weykamp, T J, Penders
Publikováno v:
Annali dell'Istituto superiore di sanita. 32(2)
External quality assessment schemes (EQAS) for trace elements in body fluids are organized in The Netherlands by the SKZL (Foundation for Quality Assessment in Clinical Laboratories). Medical laboratories participate on a voluntary base. The EQAS is
Publikováno v:
Clinical chemistry. 41(5)
Three groups of 10 age- and sex-matched nondiabetic volunteers took 0, 750, or 1500 mg of vitamin C each day for 12 weeks. Glycohemoglobin (GHb) was measured by HPLC, electrophoresis, affinity chromatography, and immunoassay at baseline (-4 weeks and
Publikováno v:
Clinical chemistry. 41(1)
We investigated the effect of calibration with lyophilized calibrators on whole-blood glycohemoglobin (glyHb) results. One hundred three laboratories, using 20 different methods, determined glyHb in two lyophilized calibrators and two whole-blood sam
Publikováno v:
Clinical chemistry. 40(1)
One hundred eleven laboratories, using 21 different methods based on five different principles, determined glycohemoglobin (GHb) percentages in two identical series of six lyophilized hemolysates and three similarly processed calibrators, distributed
Publikováno v:
Clinical chemistry. 39(8)
Influences of hemoglobin (Hb) variants (HbSS, HbCC, beta-thalassemia, HbAE, HbAS, HbAC, hereditary persistent HbF) and Hb derivatives (carbamylated- and acetylated-Hbs, Schiff base, and those formed in stored blood) on results of glyco-Hb assays by 1
Publikováno v:
Clinical chemistry. 39(1)
In vitro-synthesized carbamylated and acetylated hemoglobins interfered in assays of glycohemoglobin by HPLC and electrophoresis but had no effects on results obtained by affinity chromatography and enzyme immunoassay. Correlations between long-term
Publikováno v:
Clinical Chemistry, 35(12), 2281-2284. AMER ASSOC CLINICAL CHEMISTRY
We describe a project, participated in by 24 institutions in The Netherlands and Belgium, to determine normal reference values for steroids in urine by capillary gas chromatography. Urine samples from 288 healthy volunteers were analyzed in triplicat
Publikováno v:
Clinical Chemistry. 31:637-639
Extraction of steroids from urine with C18 solid-phase extraction cartridges results in an extract containing impurities. If, during the extraction of hydrolyzed urine, an amino (NH2) column is placed in series with the C18 column, then one obtains a