The present invention relates to compositions and methods for analyzing analytes of interest in liquid samples by mass spectrometry, and preferably in patient samples. Preferred analytes of interest include sirolimus (rapamycin), corticosteroids, bile acids and lamotrigine (lamictal). In one embodiment, by careful selection of target ions, a number of corticosteroids can be analyzed simultaneously and without interference from closely related molecules. In another embodiment, the present methods combine high turbulence liquid chromatography with mass spectrometry performed in positive and negative mode in a single assay to enable the detection and quantification of the composition of bile acid pools. By combining mass spectrometry and high-throughput chromatography, the methods and compositions described herein can provide a rapid, sensitive, and accurate assay for use in large clinical laboratories.
本发明涉及用质谱分析液体样品中感兴趣的分析物的组成和方法,优选地在患者样品中进行。感兴趣的分析物包括
西罗莫司(
雷帕霉素)、皮质类
固醇、
胆汁酸和
拉莫三嗪(拉莫地平)。在一种实施例中,通过精心选择目标离子,可以同时分析多种皮质类
固醇,并且不受密切相关分子的干扰。在另一种实施例中,本方法将高湍流
液相色谱与正负离子质谱分析结合在一个单一的测定中,以便检测和定量
胆汁酸池的组成。通过结合质谱和高通量色谱,本文所描述的方法和组成物可以为大型临床实验室提供快速、灵敏和准确的测定。