检验医学 ›› 2022, Vol. 37 ›› Issue (2): 108-111.DOI: 10.3969/j.issn.1673-8640.2022.02.002

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依据CLSI EP07-A3文件评价血清指数对免疫散射比浊法检测前白蛋白的干扰

韩光1, 徐琼峰2, 段淑敏3, 骆嘉欢4, 王云秀1, 张秀娟1, 万泽民1, 柯培锋1, 黄宪章1()   

  1. 1.广东省中医院,广东 广州 510120
    2.中国南方航空股份有限公司航空卫生中心,广东 广州 510400
    3.广州中医药大学金沙洲医院,广东 广州 510168
    4.中山大学孙逸仙纪念医院,广东 广州 510120
  • 收稿日期:2020-06-23 修回日期:2021-07-27 出版日期:2022-02-28 发布日期:2022-03-15
  • 通讯作者: 黄宪章
  • 作者简介:黄宪章,E-mail: huangxz020@163.com
    韩 光,男,1985年生,硕士,主管技师,主要从事检验标准化与信息化研究。
  • 基金资助:
    广东省科技计划项目(20170215);广东省中医药局科研项目(20182056)

Evaluation of the interference of serum index in the determination of prealbumin by immunoscattering turbidimetry according to CLSI EP07-A3 document

HAN Guang1, XU Qiongfeng2, DUAN Shumin3, LUO Jiahuan4, WANG Yunxiu1, ZHANG Xiujuan1, WAN Zemin1, KE Peifeng1, HUANG Xianzhang1()   

  1. 1. Guangdong Provincial Hospital of Chinese Medicine,Guangzhou 510120,Guangdong,China
    2. Aviation Health Center of China Southern Airlines Co.,Ltd.,Guangzhou 510400,Guangdong,China
    3. Jinshazhou Hospital of Guangzhou University of Traditional Chinese Medicine,Guangzhou 510168,Guangdong,China
    4. Sun Yat-sen Memorial Hospital,Sun Yat-sen University,Guangzhou 510120,Guangdong,China
  • Received:2020-06-23 Revised:2021-07-27 Online:2022-02-28 Published:2022-03-15
  • Contact: HUANG Xianzhang

摘要:

目的 探讨溶血、黄疸、脂浊对免疫散射比浊法检测前白蛋白(PA)的干扰效果。方法 以新鲜血清样本作为基础样本,添加干扰物[血红蛋白(Hb)、胆红素及脂质]后,采用免疫散射比浊法检测PA水平。参考美国临床实验室标准化协会(CLSI)EP07-A3文件进行配对差异实验、剂量效应实验。结果 10 g/LHb(溶血指数为1 000)、200 mg/L(340 μmol/L)胆红素(黄疸指数为20)对PA的检测无干扰,脂浊指数为987的脂浊干扰物对PA检测有负干扰。脂质对PA的干扰程度与脂浊指数呈线性关系。对于PA低值样本,脂浊指数≤120时,对PA检测无显著干扰,脂浊指数与干扰率的线性方程为Y=-0.077X+0.979(r 2=0.999);对于PA高值样本,脂浊指数≤203时,对PA检测无显著干扰,脂浊指数与干扰率的线性方程为Y=-0.040X-0.168(r2=0.992)。结论 临床常见的溶血和黄疸样本不会干扰免疫散射比浊法PA检测结果,但脂浊指数>120会造成负干扰。

关键词: 前白蛋白, 免疫散射比浊法, 血清指数, 干扰

Abstract:

Objective To investigate the interference effect of hemolysis,icterus and lipemia on the determination of prealbumin(PA) by immunoscattering turbidimetry. Methods A fresh serum sample was used as a basic sample,interfering substances [hemoglobin(Hb),bilirubin and lipid] were added,and the PA level was determined by immunoscattering turbidimetry. According to the EP07-A3 document of the Clinical and Laboratory Standards Institute(CLSI),the paired difference experiment and dose-effect experiment were performed. Results PA had no interference with 10 g/L Hb(hemolysis index of 1 000)and 200 mg/L(340 μmol/L) bilirubin(icterus index of 20). The lipid turbidity interfering substance with a lipid turbidity index of 987 had a negative interference on the determination of PA. The degree of interference had a linear relationship with the lipid turbidity index. For samples with low values of PA,when the lipid turbidity index≤120,there was no interference to PA determination. The linear equation between lipid turbidity index and interference rate was Y=-0.077X+0.979(r 2=0.999). For samples with high values of PA,when the lipid turbidity index≤203,there was no interference to PA determination. The linear equation between lipid turbidity index and interference rate was Y=-0.040X-0.168(r2=0.992). Conclusions Generally clinical hemolytic and icteric samples will not interfere with the PA determination results by immunoscattering turbidimetry. The samples with lipid turbidity index>120 will cause negative interference to PA determination results.

Key words: Prealbumin, Immunoscattering turbidimetry, Serum index, Interference

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