Evaluation of an automated immunoassay procedure for APO-LDL for phenotyping type II hyperlipoproteinemia
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Apo-low density lipoproteins were determined by an automated immunoassay procedure on serum samples from 88 normolipidemic individuals and 84 hyperlipoproteinemic subjects, to establish whether this method was useful in the routine detection of type II hyperlipoproteinemia. The results obtained were compared with the cholesterol levels of the same specimens. In subjects with type II hyperlipoproteinemia, the apo low density lipoprotein levels, as well as the ratio of low density lipoprotein cholesterol/apo-low density lipoprotein were higher, as expected, than in normals or in subjects with other types of hyperlipoproteinemia. However, there was considerable overlap in individual values of both these parameters, between patients with type II hyperlipoproteinemia and normals or subjects with other types of hyperlipoproteinemia, suggesting that apo low density lipoprotein levels alone were not sufficiently discriminatory for the laboratory determination of type II hyperlipoproteinemia.
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