一种多目标查方法,用于检测干血斑中的小,用于兴奋剂控制分析
Gaia Boschetti1,2, Tobias Langer1, Claudio Medana2
1Swiss Laboratory for Doping Analyses, University Center of Legal Medicine Lausanne-Geneva, Lausanne University Hospital, University of Lausanne, Épalinges, Switzerland.
Drug testing and analysis
|January 24, 2026
概括
这项研究引入了一种用于体育药物测试的干血斑点 (DBS) 中检测小的新方法. 验证的方法适用于纤维素和聚合物DBS,提供了改进的分析能力.
科学领域:
- * 分析化学 分析化学
- * 生物化学 * 生物化学
- * 法医科学 法医科学
背景情况:
- * 干血斑 (DBS) 越来越多地用于体育中药物测试,提供方便,但由于各种支持材料,具有分析挑战.
- *现有的提取方法通常针对纤维素或聚合物DBS,限制了它们的普遍应用.
- *在体育兴奋剂控制中检测小及其代谢物需要敏感和选择性的分析技术.
研究的目的:
- * 开发和验证一种单一的定性选方法,用于检测纤维素和聚合物DBS中的小和其代谢物.
- * 解决体育药物测试中不同DBS矩阵所带来的分析挑战.
- * 确保该方法符合世界反兴奋剂机构 (WADA) 制定的严格要求.
主要方法:
- *从纤维素和聚合物DBS中提取分析物,采用双步溶剂提取工艺 (酸溶液,然后是乙酸缓冲).
- * 通过使用混合模式,弱阴离子交换方法的固态提取来净化组合提取物.
- * 分析采用超高性能液态染色学与高分辨率质谱学 (UHPLC-Orbitrap Q-Exactive) 结合,采用优化的采集模式.
主要成果:
- * 一种强大的方法,能够使用单一的程序分析聚合物和纤维素DBS上的小.
- * 根据WADA规则的验证结果令人满意,表现出良好的选择性和敏感性.
- * 在每毫升低纳米克 (ng/mL) 范围内达到检测极限,适用于体育药物测试.
结论:
- * 开发的方法提供了一种多功能和有效的解决方案,用于检测DBS中的小,用于反兴奋剂目的.
- *这种方法通过将不同的DBS矩阵与统一的协议相结合来简化样本分析.
- *该方法的灵敏性和选择性使其适合在体育药物测试计划中的常规应用.
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