title: [Lipoprotein (a) and the evaluation of low density cholesterol by the Friedewald formula: a new problem for an old equation].
abstract: BACKGROUND
  To evaluate the influence of lipoprotein(a) [Lp(a)] concentration on the LDL-cholesterol calculated by the Friedewald formula.
  
  
  METHODS
  Lp(a) was determined to a worker population of 947 subject in order to perform a correction of LDL-cholesterol obtained by the Friedewald formula.
  
  
  RESULTS
  In subjects in whom Lp(a) was > 30 mg/dl (12.9%) LDL-cholesterol levels were overestimated 10 mg/dl at least.
  
  
  CONCLUSIONS
  Lp(a) should be considered in order to reduce Friedewald's formula error on the estimation of LDL-cholesterol.
authors.affiliation: Sección de Endocrinología, Hospital General Universitari Vall d'Hebron, Barcelona.
authors.forename: C
authors.initials: C
authors.lastname: Hernández
authors.forename: P
authors.initials: P
authors.lastname: Chacón
authors.forename: L
authors.initials: L
authors.lastname: García-Pascual
authors.forename: J
authors.initials: J
authors.lastname: Rosselló
authors.forename: R
authors.initials: R
authors.lastname: Simó
mesh_terms: D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood*; D004796:Clinical Enzyme Tests / Q000379:methods*; D006801:Humans; D012189:Retrospective Studies; D014280:Triglycerides / Q000097:blood
chemical_list: D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D014280:Triglycerides
vernacular_title: Lipoproteína(a) y estimación del colesterol LDL mediante la fórmula de Friedewald: un nuevo problema para una vieja ecuación.