Chemiluminescence assay of alkaline phosphatase using cortisol-21-phosphate as substrate and its application to enzyme immunoassays

被引:53
作者
Kokado, A [1 ]
Tsuji, A [1 ]
Maeda, M [1 ]
机构
[1] SHOWA UNIV,SCH PHARMACEUT SCI,SHINAGAWA KU,TOKYO 142,JAPAN
关键词
chemiluminescence; enzymatic methods; immunoassay; alkaline phosphatase; cortisol-21-phosphate; human chorionic gonadotropin; human growth hormone; alpha-fetoprotein; estradio;
D O I
10.1016/S0003-2670(96)00400-X
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A method is described for the highly sensitive chemiluminescence (CL) assay for alkaline phosphatase (ALP) using cortisol-21-phosphate (cortisol-21-P) as substrate and lucigenin as CL reagent; it is applied to an enzyme immunoassay (EIA) for human chorionic gonadotropin (hCG), human growth hormone (hGH), alpha-fetoprotein (AFP) and estradiol (E(2)). The detection limit for ALP was 8.75 x 10(-20) mol/assay, and the average coefficient of variation (n=11) over the calibration range (3.55 x 10(-15)-7.1 x 10(-10) moll(-1)) was 6.4%. In EIA for hCG, hGH, AFP and E(2), the detection limits were 0.008 mIU ml(-1),10, 40 and 0.25 pg ml(-1), respectively.
引用
收藏
页码:335 / 340
页数:6
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