新生儿促甲状腺素的时间分辨荧光免疫分析及其试剂盒研制.doc.doc

新生儿促甲状腺素的时间分辨荧光免疫分析及其试剂盒研制 谭玉华，冯健明，卢顺舵，罗建安，李建国，季涛，李贵情 （广州市丰华生物工程有限公司，广州 510730 ） 摘要：目的 利用时间分辨荧光免疫分析（TrFIA）技术，建立新生儿促甲状腺素（Neonatal TSH）微量检测法，并研制其检测试剂盒。方法 采用了一株TSH单克隆抗体用于固相包被，另一株TSH单克隆抗体用于标记铕（Eu3+），固相双抗体夹心时间分辨荧光免疫分析法检测Neonatal TSH。结果 自建的Neonatal hTSH TrFIA法灵敏度高可达2.28μU/ml，且在测量范围内，自制试剂盒剂量-反应曲线的相关系数r 达0.9987。与hLH、hFSH、HCG无明显交叉反应。分析内或分析间质控结果在靶值±25%内，室内低质控、高质控分析内和分析间变异系数(CV)分别为7.12%和6.09%，7.82%和7.03%。与DELFIA ? Neonatal TSH试剂标准品进行准确性比对实测值与标示效价比平均值为1.05。与DELFIA ? Neonatal TSH试剂比对试验符合率一致，相关性系数r可达0.9822。试剂盒室间质评能力比对成绩100%。结论 自建的Neonatal TSH TrFIA法具有灵敏度高，特异性强，准确度高，精密性好和非放射性等优点，具有良好的临床应用价值。 关键词：新生儿；促甲状腺素；时间分辨荧光免疫分析 Time-resolved Fluoroimmunoassay of Neonatal Hypothyropin and Preparation of It’s Test Reagent Tan Yu-hua,Feng Jian-ming, Lu Shun-duo, Luo Jian-an, Li Jian-guo, Ji Tao,Li Gui-qing ( Guang zhou Fenghua Bio-engineering Co.,LTD,Guangzhou 510730 China) Abstract: Objective To establish a method of Time-resolved Fluoroimmunoassay(TrFIA) for the quantitative determination of human thyroid stimulating hormone(hTSH) in blood specimens dired on filter paper as an aid in screening newborns for neonatal hypothyroidism,and to prepare it’s test reagent .Methods The method based on solidphase sandwich TrFIA for Neonatal Hypothyropin(Neo-hTSH),which used two anti-TSH monoclonal antibody -one was coated on microplates and another was labeled by Europium. Results The assay sensitivity of the method was 2.28μU/ml.The correlation coefficient of self made kit’s curve was 0.9987.There was no obvious cross-reaction to human luteinizing hormone(hLH) , human follicle stimulating(hFSH) and human chorionic gonadotropin(HCG).The intra-assay and the inter-assay measured values of controls were not more than 25% difference from their labeled values, still their intra-assay and the inter-assay coefficients of variation(CV) of low and high controls were 7.12% and 6.09%, 7.82% and 7.03%,respectively. The correlation coefficient of self made Kit and DELFIA ? Neonatal TSH kit was 0.9822,and th