Medida del colesterol de lipoproteínas de baja densidad utilizando tres metodologías:Medición de colesterol de lipoproteínas de baja densidad

Abstract

Considering that there is still no standard methodology for routine determination of low density lipoprotein (LDL-c) it was decided to evaluate their analytical determination using three techniques: homogeneous enzymatic determination, polyvinyl sulphate precipitation and Friedewald formula. Ninety-eight serum samples were processed; triglycerides (TG), total cholesterol (TC), high-density lipoprotein (HDL-c) and LDL-c were determined. Mean total cholesterol was 194.46 ± 43.54 mg/dL, HDL-C was 51.12 ± 12.36 mg/dL and TG was 132.88 ± 76.93 mg/dL. Although regression analysis showed a good correlation between LDL-c, the results showed a statistically significative difference in them when TG levels exceeded 200 mg/dL. It was mainly observed in the precipitation method and the Friedewald formula, the latter values being significantly lower (LDL-C by precipitation: 141.3 ± 26.2 mg/dL, LDL-C by the Friedewald formula: 110, 1 ± 35.4 mg/dL). Moreover, this difference affected the proportion of individuals classified according to their coronary risk. It is necessary to compare the techniques applied in this study with beta quantification to assess which has a higher level of accuracy.

Divisions: College of Health & Life Sciences > Aston Medical School
College of Health & Life Sciences > Aston Medical School > Translational Medicine Research Group (TMRG)
PURE Output Type: Article
Published Date: 2012
Authors: Querales, Marvin
Cruces, María Elena
Sánchez, César
Querales, Marisel
Rojas, Susan
Sanchez Aranguren, Lissette (ORCID Profile 0000-0002-4663-5752)

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