A novel assay for the quantitative determination of lipoprotein-X (LP-X) in serum

ES Bos, AA van der Doelen, AEHC Denissen… - Clinica Chimica …, 1983 - Elsevier
ES Bos, AA van der Doelen, AEHC Denissen, BC Goverde, HN Magnani, GM Kostner
Clinica Chimica Acta, 1983Elsevier
A new, fast and simple quantitative LP-X assay is described. The method selectively
removes apoB-containing lipoproteins by precipitation with specific antibodies. To the
supernatant, a precipitation system for LP-X, viz. SDS and MgCl 2 in final concentrations of
0.5 g/1 and 0.2 mol/1 respectively, is added and the turbidity measured at 360 nm. The
assay is linear from 0.2 g/1-5.0 g/1 and shows a high precision (inter-assay CV of less than
3%). The test correlates favourably with other quantitative LP-X assays, but has the …
Abstract
A new, fast and simple quantitative LP-X assay is described. The method selectively removes apoB-containing lipoproteins by precipitation with specific antibodies. To the supernatant, a precipitation system for LP-X, viz. SDS and MgCl2 in final concentrations of 0.5 g/1 and 0.2 mol/1 respectively, is added and the turbidity measured at 360 nm. The assay is linear from 0.2 g/1-5.0 g/1 and shows a high precision (inter-assay CV of less than 3%). The test correlates favourably with other quantitative LP-X assays, but has the particular advantage that it can be automated and that the time required for one series is only 2 h.
Elsevier