Original Article
Preparation of serum total cholesterol,total glycerol,high-density lipoprotein cholesterol and low-density lipoprotein cholesterol reference materials
ZHOU Wei-yan, ZHANG Chuan-bao, DONG Jun, WANG Shu, ZHANG Jiang-tao, GUO Han-bang, LI Hong-xia, HU Cui-hua, ZHAO Hai-jian, ZHANG Tian-jiao, MA Rong, SHEN Zi-yu, CHEN Wen-xiang
Published 2013-11-11
Cite as Chin J Lab Med, 2013, 36(11): 1013-1017. DOI: 10.3760/cma.j.issn.1009-9158.2013.11.011
Abstract
ObjectiveTo prepare serum reference materials for total cholesterol (TC),total glycerol (TTG),high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C).
MethodsIndividual blood samples were collected from 28 healthy donors (14 males and 14 females) aged from 20 to 50 years old in November 2008 in Beijing Hospital,and the sera were separated and mixed into 3 serum pools according to cholesterol levels.The materials were tested for homogeneity and stability using routine methods.The methods of isotope dilution liquid chromatography tandem mass spectrometry (ID-LC/MS/MS) and high performance liquid chromatography (HPLC) were used to determine the concentration of TC.HPLC,ID-LC/MS/MS and isotope dilution gas chromatography mass spectrometry (ID-GC/MS) methods were used for TTG.The values of HDL-C and LDL-C were assigned by the designated comparison method and ultracentrifugation/HPLC method,respectively.
ResultsThe materials were homogeneous and were tested to be stable for at least 1 year at -70℃ using the isochronous stability study.The certified values (reference value±expanded uncertainty) of the 3 materials were: TC, 6.798±0.075, 4.470±0.050, 3.221±0.042; TTG, 1.327±0.024, 0.824±0.017, 0.659±0.014; HDL-C, 1.640±0.028, 1.652±0.027, 1.184±0.022; LDL-C, 4.577±0.097, 2.492±0.072, 1.788±0.041.
ConclusionCertified reference materials for serum TC, TTG, HDL-C and LDL-C have been prepared.(Chin J Lab Med,2013,36:1013-1017)
Key words:
Cholesterol; Triglycerides; Cholesterol,HDL; Cholesterol,LDL; Reference standards
Contributor Information
ZHOU Wei-yan
National Center for Clinical Laboratories,Beijing Hospital,Ministry of Health,Beijing 100730,China
ZHANG Chuan-bao
DONG Jun
WANG Shu
ZHANG Jiang-tao
GUO Han-bang
LI Hong-xia
HU Cui-hua
ZHAO Hai-jian
ZHANG Tian-jiao
MA Rong
SHEN Zi-yu
CHEN Wen-xiang