检验医学 ›› 2026, Vol. 41 ›› Issue (1): 73-77.DOI: 10.3969/j.issn.1673-8640.2026.01.013

• 论著 • 上一篇    下一篇

IgM型M蛋白对载脂蛋白和脂蛋白检测结果的影响和纠正措施

范家保, 赵萌, 吴晓玲, 许涛, 朱正其, 陈明亮, 赵缜()   

  1. 复旦大学附属闵行医院检验科,上海 201199
  • 收稿日期:2024-07-30 修回日期:2025-02-28 出版日期:2026-01-30 发布日期:2026-01-30
  • 通讯作者: 赵缜
  • 作者简介:赵 缜,E-mail:zhaozhen863@126.com
    范家保,男,1983年生,学士,主管技师,主要从事临床生化检验工作。

Influence of IgM-type M protein on determination results of apolipoprotein and lipoprotein and corrective measures

FAN Jiabao, ZHAO Meng, WU Xiaoling, XU Tao, ZHU Zhengqi, CHEN Mingliang, ZHAO Zhen()   

  1. Department of Clinical Laboratory,Minhang Hospital,Fudan University,Shanghai 201199,China
  • Received:2024-07-30 Revised:2025-02-28 Online:2026-01-30 Published:2026-01-30
  • Contact: ZHAO Zhen

摘要:

目的 评价预稀释法和聚乙二醇(PEG)沉淀法对血清中IgM型M蛋白干扰载脂蛋白(apo)和脂蛋白检测结果的纠正效果。方法 评估预稀释法和PEG沉淀法对对照血清样本apo A1、apo B、apo E、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)检测结果的影响,筛选合适的预稀释法比例和PEG6000溶液浓度,探讨其对M蛋白干扰apo A1、apo B、apo E、HDL-C和LDL-C检测结果的纠正效果。结果 预稀释法比例为1:1时,对照血清样本的apo A1、apo B、apo E、HDL-C、LDL-C检测结果偏倚均在室内质控允许误差范围内。当PEG6000浓度为2%、4%、8%时,对照血清样本apo A1、apo B、apo E、HDL-C、LDL-C检测结果的偏倚均在允许误差范围内。3例M蛋白阳性血清的apo A1、apo B、apo E在预稀释法每个稀释倍数时检测结果的一致性均较差,但HDL-C、LDL-C检测结果具有良好的一致性。3例M蛋白阳性血清样本在PEG6000浓度为8%时,检测结果可信。结论 预稀释法不能消除M蛋白的干扰作用,8%的PEG6000溶液可以消除M蛋白对apo A1、apo B、apo E、HDL-C、LDL-C检测结果的干扰,且对对照血清样本相同项目的检测结果无明显干扰作用,适合临床推广应用。

关键词: IgM型M蛋白, 干扰, 载脂蛋白, 预稀释法, 聚乙二醇沉淀法

Abstract:

Objective To evaluate the correction effects of pre-dilution method and polyethylene glycol(PEG) precipitation method on the interference of IgM-type M protein in serum on the determination results of apolipoproteins(apo) and lipoproteins. Methods The effects of pre-dilution method and PEG precipitation method on the determination results of apo A1,apo B,apo E,high-density lipoprotein cholesterol(HDL-C) and low-density lipoprotein cholesterol(LDL-C) in control serum samples were evaluated. The appropriate pre-dilution ratios and PEG6000 solution concentrations were screened,and their correction effects on the interference of M protein on the determination results of apo A1,apo B,apo E,HDL-C and LDL-C were evaluated. Results When the pre-dilution ratio was 1︰1,the determination results of apo A1,apo B,apo E,HDL-C and LDL-C in control serum samples were all within the allowable error range of internal quality control. When the PEG6000 solution concentrations were 2%,4% and 8%,the determination results of apo A1,apo B,apo E,HDL-C and LDL-C in control serum samples were all within the allowable error range. The consistency of the determination results of apo A1,apo B and apo E in 3 M protein-positive serum samples was poor at each dilution ratio of the pre-dilution method,but the determination results of HDL-C and LDL-C had good consistency. When the PEG6000 solution concentration was 8% in 3 M protein serum samples, the determination results were reliable. Conclusions The pre-dilution method can not eliminate the interference of M protein. The 8% PEG6000 solution can eliminate the interference of M protein on the determination results of apo A1,apo B,apo E,HDL-C and LDL-C,and it has no significant interference effect on the determination results of the same items in control serum samples,which is suitable for clinical promotion and application.

Key words: IgM-type M protein, Interference, Apolipoprotein, Pre-dilution method, Polyethylene glycol precipitation method

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