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Clin Chim Acta. 1985 Oct 15;151(3):285-91.

Estimation of VLDL cholesterol in hyperlipidemia.


Lipoprotein data from 10947 fasting blood samples drawn between 1968 and 1982 in the Molecular Disease Branch at the National Institutes of Health were used to test the generalizability of estimating very low density lipoprotein cholesterol (VLDL-C) from plasma triglyceride (TG). Patient samples with total cholesterol levels over 500 mg/l and triglyceride values in the 0-100 000 mg/1 range were included in this study. A previously defined linear relationship VLDL-C = 0.20 (TG) was observed in the past by Friedewald and collaborators, allowing estimation of low density lipoprotein cholesterol (LDL-C) without ultracentrifugation for TG values up to 4 000 mg/1. The results from this report extend the use of the Friedewald relationship to higher TG levels, and to various dyslipidemic states. As the VLDL-C estimates become increasingly imprecise for TG values greater than 10 000 mg/l, caution should be exercised using the estimate in the higher TG ranges. Comparisons with an alternative equation VLDL-C = 0.166 (TG) showed equal or improved accuracy with this estimation procedure, particularly at high TG levels.

[Indexed for MEDLINE]

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