Publications [#142030] of Geoffrey S Ginsburg

Papers Published

1. N Harris, EJ Neufeld, JW Newburger, B Ticho, A Baker, GS Ginsburg, E Rimm, N Rifai, Analytical performance and clinical utility of a direct LDL-cholesterol assay in a hyperlipidemic pediatric population., Clinical chemistry, UNITED STATES, vol. 42 no. 8 Pt 1 (August, 1996), pp. 1182-8, ISSN 0009-9147
   (last updated on 2008/01/15)

   Abstract:
   This study compares a new latex immunoseparation method for the direct determination of plasma low-density lipoprotein cholesterol (LDL-C) with the reference procedure for LDL-C (beta-quantification) in a pediatric hyperlipidemic population. The direct LDL-C assay has a mean bias of -98 mg/L in a fasting group (n = 96) of patients (mean triglycerides 1057 +/- 720 mg/L) and a bias of +177 mg/L in a nonfasting group (n = 42, mean triglycerides 4854 +/- 5457 mg/L). The mean total analytical error calculated from our data is 13.8%. The direct LDL-C assay and the commonly used Friedewald calculation respectively classified 81% and 84% of fasting patients correctly, according to the cutoffs of 1100 and 1300 mg/L for LDL-C set by the National Cholesterol Education Program for pediatric patients. Of combined fasting and nonfasting patients, 80% were correctly classified by the direct LDL-C assay. Therefore, despite several analytical shortcomings, the direct LDL-C assay may be useful in managing hyperlipidemic children without the need for a fasting specimen.

   Keywords:
   Adolescent • Adult • Child • Child, Preschool • Cholesterol, LDL • Fasting • Humans • Hyperlipidemias • Immunoassay • Infant • Quality Control • Sensitivity and Specificity • Triglycerides • blood • blood* • methods* • statistics & numerical data*