Search Results - "Weykamp, C."

Recommendations on the measurement and use of the alcohol consumption biomarker CDT. A position paper from the IFCC Working Group on CDT standardisation by Wielders, J.P.M., Porpiglia, N.M., Schellenberg, F., Deenmamode, J., Delanghe, J., Anton, R.F., Bortolotti, F., Siebelder, C., Tagliaro, F., Weykamp, C., Helander, A.

“…•IFCC position paper about CDT outlining caveats, key points, and recommendations.•Alcohol intake versus CDT is discussed as well as the cut-off and expected…”
Get full text

External quality assessment of HbA1c; Lessons learnt and future prospects for quality targets by Weykamp, C.

Get full text

Time-dependent instability of cardiac troponins in human plasma spiked with NIST reference material 2921 by Cobbaert, C M, Weykamp, C W, Michielsen, E C H J, Baadenhuijsen, H, van Dieijen-Visser, M P

“…External quality assurance organizers, such as the Dutch SKML (Dutch Foundation for Quality Assessment in Clinical Laboratories), have a policy of monitoring,…”
Get full text

Influence of hemoglobin variants and derivatives on glycohemoglobin determinations, as investigated by 102 laboratories using 16 methods by Weykamp, C W, Penders, T J, Muskiet, F A, van der Slik, W

“…Influences of hemoglobin (Hb) variants (HbSS, HbCC, beta-thalassemia, HbAE, HbAS, HbAC, hereditary persistent HbF) and Hb derivatives (carbamylated- and…”
Get more information

External quality assurance programme for enzymatic analysis of lysosomal storage diseases: A pilot study by Ruijter, G. J. G., Boer, M., Weykamp, C. W., De Vries, R., Berg, I., Janssens‐Puister, J., Niezen‐Koning, K., Wevers, R. A., Poorthuis, B. J. H. M., Diggelen, O. P.

“…Inborn errors of metabolism are rare and laboratories performing diagnostic tests in this field must participate in external quality assurance (EQA) schemes to…”
Get full text

Carbamylated hemoglobin interference in glycohemoglobin assays by Weykamp, C W, Miedema, K, de Haan, T, Doelman, C J

Get full text

Effect of calibration on dispersion of glycohemoglobin values determined by 111 laboratories using 21 methods by Weykamp, C W, Penders, T J, Muskiet, F A, van der Slik, W

“…One hundred eleven laboratories, using 21 different methods based on five different principles, determined glycohemoglobin (GHb) percentages in two identical…”
Get more information

Interference of carbamylated and acetylated hemoglobins in assays of glycohemoglobin by HPLC, electrophoresis, affinity chromatography, and enzyme immunoassay by Weykamp, C W, Penders, T J, Siebelder, C W, Muskiet, F A, van der Slik, W

“…In vitro-synthesized carbamylated and acetylated hemoglobins interfered in assays of glycohemoglobin by HPLC and electrophoresis but had no effects on results…”
Get more information

Neurotransmitter metabolites in CSF: An external quality control scheme by Bräutigam, C., Weykamp, C., Hoffmann, G. F., Wevers, R. A.

“…We report an international external quality control scheme on neurotransmitter metabolites in cerebrospinal fluid (CSF). The neurotransmitter metabolites…”
Get full text

Standardization of glycohemoglobin results and reference values in whole blood studied in 103 laboratories using 20 methods by Weykamp, C W, Penders, T J, Miedema, K, Muskiet, F A, van der Slik, W

“…We investigated the effect of calibration with lyophilized calibrators on whole-blood glycohemoglobin (glyHb) results. One hundred three laboratories, using 20…”
Get more information

A model for harmonization of routine clinical chemistry results between clinical laboratories by Baadenhuijsen, H, Scholten, R, Willems, H L, Weykamp, C W, Jansen, R T

“…Clinical chemistry laboratory results from different laboratories often show large between-laboratory variation due to factors such as differences in method…”
Get more information

Standardisation and use of the alcohol biomarker carbohydrate-deficient transferrin (CDT) by Helander, Anders, Wielders, Jos, Anton, Raymond, Arndt, Torsten, Bianchi, Vincenza, Deenmamode, Jean, Jeppsson, Jan-Olof, Whitfield, John B., Weykamp, Cas, Schellenberg, François

“…Carbohydrate-deficient transferrin (CDT) is a glycoform profile of serum transferrin that increases in response to sustained high alcohol intake and over the…”
Get full text

IFCC approved HPLC reference measurement procedure for the alcohol consumption biomarker carbohydrate-deficient transferrin (CDT): Its validation and use by Schellenberg, François, Wielders, Jos, Anton, Raymond, Bianchi, Vincenza, Deenmamode, Jean, Weykamp, Cas, Whitfield, John, Jeppsson, Jan-Olof, Helander, Anders

“…Carbohydrate-deficient transferrin (CDT) is used as a biomarker of sustained high alcohol consumption. The currently available measurement procedures for CDT…”
Get full text

Survey of Total Error of Precipitation and Homogeneous HDL-Cholesterol Methods and Simultaneous Evaluation of Lyophilized Saccharose-containing Candidate Reference Materials for HDL-Cholesterol by Cobbaert, Christa, Mulder, Paul G.H, Baadenhuijsen, Henk, Zwang, Louwerens, Weykamp, Cas W, Demacker, Pierre N.M

“…Standardization of HDL-cholesterol is needed for risk assessment. We assessed for the first time the accuracy of HDL-cholesterol testing in The Netherlands and…”
Get full text

Steroid profile for urine: reference values by Weykamp, C W, Penders, T J, Schmidt, N A, Borburgh, A J, van de Calseyde, J F, Wolthers, B J

“…We describe a project, participated in by 24 institutions in The Netherlands and Belgium, to determine normal reference values for steroids in urine by…”
Get more information

Reprint of Standardisation and use of the alcohol biomarker carbohydrate-deficient transferrin (CDT) by Helander, Anders, Wielders, Jos, Anton, Raymond, Arndt, Torsten, Bianchi, Vincenza, Deenmamode, Jean, Jeppsson, Jan-Olof, Whitfield, John B., Weykamp, Cas, Schellenberg, François

“…Carbohydrate-deficient transferrin (CDT) is a glycoform profile of serum transferrin that increases in response to sustained high alcohol intake and over the…”
Get full text

Vitamin C and glycohemoglobin by Weykamp, C W, Penders, T J, Baadenhuijsen, H, Muskiet, F A, Martina, W, van der Slik, W

“…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…”
Get more information

Harmonization of measurement results of the alcohol biomarker carbohydrate-deficient transferrin by use of the toolbox of technical procedures of the International Consortium for Harmonization of Clinical Laboratory Results by Weykamp, Cas, Wielders, Jos, Helander, Anders, Anton, Raymond F, Bianchi, Vincenza, Jeppsson, Jan-Olof, Siebelder, Carla, Whitfield, John B, Schellenberg, François

“…The need for equivalent results of routine measurement procedures for the alcohol biomarker carbohydrate-deficient transferrin (CDT) has been recognized by the…”
Get full text

Hemoglobins S and C: reference values for glycohemoglobin in heterozygous, double-heterozygous and homozygous subjects, as established by 13 methods by Weykamp, C W, Martina, W V, van der Dijs, F P, Penders, T J, van der Slik, W, Muskiet, F A

“…Glycohemoglobin (gly-Hb) reference ranges of non-diabetic adults with HbAA (n = 17), HbAS (n = 37), HbAC (n = 22), HbSC (n = 8), HbSS (n = 6) and HbCC (n = 3)…”
Get more information

Trace elements in body fluids: external quality assessment scheme in The Netherlands by Weykamp, C W, Penders, T J

“…External quality assessment schemes (EQAS) for trace elements in body fluids are organized in The Netherlands by the SKZL (Foundation for Quality Assessment in…”
Get more information