%0 Journal Article
%T The necessity for improving lipid testing reagents: A real world study.
%A Zheng C
%A Zhou W
%A Zhou R
%A Zhang H
%A Liang S
%A Zhang W
%A Li G
%A Zhang C
%A Gan W
%J Clin Chim Acta
%V 548
%N 0
%D 2023 Aug 1
%M 37640131
%F 6.314
%R 10.1016/j.cca.2023.117529
%X <B>BACKGROUND: </B>We investigated the interference of vitamin C (VitC), glycerol fructose, lipoprotein X (LpX) and lipemia on the analysis of serum lipids.<BR><B>METHODS: </B>Serum were collected from 44 patients with VitC infusion, serum lipid concentrations before and after VitC auto-oxidation were compared. Serum of 31 patients with glycerol fructose infusion were collected, triglycerides (TG) measured by glycerol blanking and non-blanking reagents were compared. Forty-four serum samples suspected to contain LpX were collected, LDL-C measured by reagents from five manufacturers were compared. Lipemia samples were collected, LDL-C measured using five different reagents were compared. The interference rate was considered unacceptable if it was greater than 1/2 total allowable error (TEa).<BR><B>RESULTS: </B>In patients with VitC infusion, the interference rates of TG and total cholesterol (TC) were -59% (-123%, -28%) and -15% (-21%, -11%), respectively. In patients with glycerol fructose infusion, the interference rate of TG was 13% (4%, 113%). LpX interference led to increased LDL-C results for most reagents. Lipemia caused great interference with LDL-C analysis.<BR><B>CONCLUSIONS: </B>VitC, glycerol fructose, LpX and lipemia significantly interfered with lipid assays. The reagent formulation should be improved to get reliable results.