Simultaneous determination of amoxicillin and ambroxol in human plasma by LC-MS/MS: validation and application to pharmacokinetic study

A rapid, simple and sensitive LC-MS/MS method was developed for simultaneous determination of amoxicillin and ambroxol in human plasma using clenbuterol as internal standard (IS). The plasma samples were subjected to a simple protein precipitation with methanol. Separation was achieved on a Lichrospher C(18) column (150 mm x 4.6mm ID, dp 5 microm) using methanol (containing 0.2% of formic acid) and water (containing 0.2% of formic acid) as a mobile phase by gradient elution at a flow rate of 1.0 mL/min. Detection was performed using electrospray ionization in positive ion multiple reaction monitoring (MRM) mode by monitoring the ion transitions from m/z 365.9-->348.9 (amoxicillin), m/z 378.9-->263.6 (ambroxol) and m/z 277.0-->203.0 (IS). Calibration curves were linear in the concentration range of 5-20,000 ng/mL for amoxicillin, and 1-200 ng/mL for ambroxol, with the intra- and inter-run precisions of <9% and the accuracies of 100+/-7%. The method has been validated and applied to pharmacokinetic studies of compound amoxicillin and ambroxol hydrochloride tablets in healthy Chinese volunteers.     

LC-MS/MS 法测定人血浆中倍他米松

建立测定人血浆中倍他米松的LC-MS/MS方法。采用Venusil XBP C₈ (200 mm×3.9 mm ID, 5 μm)色谱柱，流动相为甲醇-水(含甲酸铵5 mmol·L^-1)(80∶20)，流速0.4 mL·min^-1；质谱仪离子源为电喷雾离子源(ESI)，正离子模式检测，监测离子为393.3→355.2(倍他米松)和361.3→343.2(泼尼松龙,内标)。血浆样本用乙酸乙酯处理。倍他米松在0.5~80.0 ng·mL^-1线性关系良好(r=0.999 2)， 血浆低、 中、 高3种浓度(1.0， 10.0， 60.0 ng·mL^-1)平均提取回收率为88.24%，定量限为0.5 ng·mL^-1。本方法操作简便、准确、灵敏，适用于复方倍他米松注射液人体药代动力学研究。     

Rapid and simultaneous measurement of midazolam, 1'-hydroxymidazolam and digoxin by liquid chromatography/tandem mass spectrometry: application to an in vivo study to simultaneously measure P-glycoprotein and cytochrome P450 3A activity

In order to simultaneously determine in vivo P-glycoprotein (P-gp) and Cytochrome P450 3A (CYP3A) activity, a new, rapid and sensitive liquid chromatography/tandem mass spectrometry (LC-MS/MS) method has been developed and fully validated to simultaneously determine midazolam (MDZ, as CYP3A substrate), 1'-hydroxymidazolam (1'-OHMDZ) and digoxin (DG, as P-gp substrate) in rat plasma using digitoxin as the internal standard (IS). After a single step liquid-liquid extraction with tert-butyl methyl ether/dichloromethane (75:25, v/v), analytes were subjected to LC-MS/MS analysis using positive electro-spray ionization (ESI(+)) under selected reaction monitoring mode (SRM). Chromatographic separation was performed on an XTerra MS C18 column (50mm×2.1mm, i.d. 3.5μm). The MS/MS detection was conducted by monitoring the fragmentation of 326.05 → 244.00 (m/z) for MDZ, 342.02 →168.01 (m/z) for 1'-OHMDZ, 798.33 → 651.36(m/z) for DG and 782.67 → 635.24 (m/z) for IS. The method had a chromatographic running time of 3min and linear calibration curves over the concentrations of 2-400ng/mL for MDZ and 1'-OHMDZ and 0.5-100ng/mL for DG. The recoveries of the method were 86.8-96.3% for MDZ, 84.6-86.4% for 1'-OH MDZ, and 81.7-85.1% for DG. The lower limit of quantification (LLOQ) of the method was 2ng/mL for MDZ and 1'-OHMDZ and 0.5ng/mL for DG. The intra- and inter-batch precision were less than 15% for all quality control samples at concentrations of 5, 50 and 320ng/mL for MDZ and 1'-OHMDZ and 1, 10 and 80ng/mL for DG. The validated LC-MS/MS method has been successfully used to analyze the concentrations of MDZ, 1'-OH MDZ and DG in rat plasma for simultaneous measurement of in vivo P-gp and CYP 3A activity.     

Determination of pinostrobin in rat plasma by LC-MS/MS: application to pharmacokinetics

A rapid and sensitive method for the determination of pinostrobin in rat plasma was developed using liquid chromatography tandem mass spectrometry (LC-MS/MS) for the first time. Isoliquiritigenin was used as an internal standard in rat plasma. Chromatographic separation was performed on an HiQ Sil C₁₈ column with isocratic elution at a flow rate of 1 mL/min. The mobile phase consisted of water and methanol (9:91, v/v) containing 0.1% formic acid. The quantification limit was 10 ng/mL within a linear range of 10-1000 ng/mL (R = 0.9984). The intra- and inter-day assay precision ranged from 3.8-5.3% to 3.2-5.2%, respectively, and the intra- and inter-day assay accuracy was between 93.2-95.1% and 95.5-104.3%, respectively. Our results indicated that the LC-MS/MS method is effective for pharmacokinetic study of pinostrobin in rat plasma.     

LC-MS/MS法测定人血浆中加巴喷丁的浓度及其药动学研究

建立液相色谱串联质谱(LC-MS/MS)法测定人血浆中加巴喷丁的浓度并将其应用于人体药动学研究。取血浆样品经甲醇沉淀蛋白后,以甲醇0.2%甲酸水溶液(80∶20)为流动相,用Inertsil ODS-3 C18柱(50 mm×2.1 mm ID,3μm)分离,采用电喷雾离子源,以多反应监测(MRM)方式进行正离子检测,定量分析的离子反应分别为m/z 172→m/z 154(加巴喷丁)和m/z 130→m/z 71(内标二甲双胍)。加巴喷丁线性范围为40.8～8.16×103 ng.mL 1,定量限为40.8 ng.mL 1,每个样品测试时间仅2.2 min,日内、日间精密度(RSD)均小于12%,准确度(RE)在±6.4%范围内。应用此法研究了20名健康志愿者单剂量口服加巴喷丁胶囊600 mg后的药动学特点。该方法快速、专属、灵敏、适用性强,可应用于加巴喷丁的人体药动学研究。     

LC-MS/MS 法测定人尿液中氯法拉滨的浓度

目的建立高效液相色谱-串联质谱（LC-MS/MS）方法测定人尿样中氯法拉滨的浓度。方法采用AB SCIEX QTRAP 5500串联质谱仪及Agilent1200高效液相色谱仪进行检测。尿样经甲基叔丁基醚提取处理,以克拉屈滨为内标。色谱柱为ThermoC18柱（150mm×4.6mm,5μm）,流动相为乙腈—4mM乙酸铵（含0.3%的甲酸）（250∶3,v/v）;流速为0.5mL·min-1。氯法拉滨和克拉屈滨的MRM扫描离子通道m/z分别为304.2→170.0,286.1→170.0。进样量：10μL。结果氯法拉滨和克拉屈滨分离良好,保留时间分别为3.77min,3.88min。氯法拉滨在2.5~500ng·mL-1范围内线性关系良好（r=0.9995）,日内、日间RSD均低于6.39%,准确度（RE）均低于10.17%。结论本法样品预处理简便快捷,检测结果专属性强,灵敏度好,准确度高,适用于氯法拉滨药代动力学的研究。     

天麻素血药浓度测定及药动学研究

目的建立天麻素血浆药物浓度LC-MS/MS测定法,测定健康受试者血浆中天麻素的浓度并评价天麻素胶囊的药动学。方法建立以阿昔洛韦为内标的天麻素血药浓度LC-MS/MS测定方法,色谱柱为AtlanticsT3（100mm×3.0mm,3μm）,流动相为乙腈-水（10∶90）,对18名健康受试者单剂量口服150mg天麻素胶囊进行药动学研究。结果建立了简单、专属的天麻素血浆药物浓度的LC-MS/MS测定法,以沉淀法进行样品前处理,无杂质干扰测定,灵敏度达到了3.00ng·mL^-1,每个生物样品分析时间仅为2min。18名健康受试者口服天麻素胶囊150mg后,测定血浆样品并估算天麻素的药动学参数,Tmax均值为（0.8±0.3）h,t1/2均值为（2.1±0.4）h,Cmax均值为（378±84）ng·mL^-1,AUC0-12均值为（878±175）ng·h·mL^-1,AUC0-∞均值为（897±175）ng·h·mL^-1。结论本法快速、准确、灵敏度高且前处理简单,能很好的应用于药动学研究。     

HPLC-MS/MS同时测定人血浆中对乙酰氨基酚和咖啡因含量的方法学研究

目的建立同时测定人血浆中对乙酰氨基酚和咖啡因浓度的HPLC-MS/MS法。方法以茶碱为内标,血浆样品用甲醇沉淀蛋白后直接进样。用Waters symmetry C18（150 mm×4.6 mm,5μm）为分析柱,甲醇-0.2%醋酸=35∶65（v/v）为流动相,流速为0.9 mL·min^-1,采用柱后分流,0.2 mL·min^-1进入质谱,柱温35℃。选择监测的离子为m/z152.1→109.9（对乙酰氨基酚）、m/z195.3→138.1（咖啡因）和m/z181.1→123.9（茶碱）。结果血浆中对乙酰氨基酚和咖啡因的线性范围分别为0.02-4.04μg·mL^-1,5.05~1 010 ng·mL^-1;日内日间精密度RSD均〈7.94%。结论本方法专属性强,灵敏度高,操作简便、快速,符合生物样品分析要求,适用于临床药动学研究。     

LC-MS-MS法测定血浆中多西他赛和紫杉醇浓度及在乳腺癌患者中的应用

目的：建立一种快速、灵敏的液相色谱－串联质谱（LC-MS/MS）法检测乳腺癌患者血浆中多西他赛、紫杉醇的浓度。方法：多西他赛和紫杉醇互为内标,血浆样品100μL加入1 mL叔丁基甲醚萃取,分离有机相,以氮气吹干后流动相复溶进样。色谱柱为Agilent Eclipse XDB-C18（2.1 mm×100 mm,3.5μm）,流动相为0.4%甲酸水溶液-0.4%甲酸乙腈溶液（20∶80,v/v）,流速0.3 mL·min-1,柱温为40℃。采用多反应监测（MRM）进行定量,电喷雾电离源（ESI）正离子方式进行检测,多西他赛与紫杉醇用于定量分析的检测离子对分别为m/z 808.5→m/z 527.2和m/z 854.3→m/z 569.4。结果：多西他赛和紫杉醇的线性范围分别为5.0~1000 ng·mL-1和1.0～500 ng· mL-1,最低检测浓度分别为5.0 ng·mL-1和1.0 ng·mL-1。两药低、中、高三个浓度的批内和批间RSD均<15%,平均提取回收率分别为65.9%~84.3%和90.4%~106.5%。结论：本法快速、准确、灵敏、专属性强,适用于同步测定多西他赛和紫杉醇血药浓度及其在中国乳腺癌患者中的药动学研究。     

Development of a rapid and sensitive LC-MS/MS assay for the determination of sorafenib in human plasma

A rapid and sensitive liquid chromatography/tandem mass spectrometric (LC/MS/MS) assay was developed for the quantitative determination of sorafenib in human plasma. Sample pretreatment involved simple protein precipitation by the addition of 0.5 mL acetonitrile, containing internal standard ([2H3, 15N] sorafenib), to 50 microL of plasma sample volume. Separation was achieved on a Waters SymmetryShield RP8 (2.1 mm x 50 mm, 3.5 microm) column at room temperature using an isocratic elution method with acetonitrile/0.1% formic acid in water: 65/35 (v/v) at a flow rate of 0.25 mL/min. Detection was performed using electrospray ionization in positive ion multiple reaction monitoring (MRM) mode by monitoring the ion transitions from m/z 464.9 --> 252.0 (sorafenib) and m/z 469.0 --> 259.0 (internal standard). Calibration curves were linear in the concentration range of 5-2000 ng/mL. The accuracy and precision values, calculated from three different sets of quality control samples analyzed in quintuplicate on six different days, ranged from 92.86% to 99.88% and from 1.19% to 4.53%, respectively.     

液相色谱-串联质谱法同时测定人血浆中二甲双胍和格列吡嗪

建立了快速、灵敏的液相色谱-串联质谱法测定人血浆中的二甲双胍和格列吡嗪。血浆样品经0.3%甲酸-乙腈(v/v)沉淀蛋白后，以乙腈-水-甲酸(70∶30∶0.3，v/v/v)为流动相，流速为0.50 mL·min^-1。Zorbax Extend C₁₈柱分离，采用大气压化学电离源；以选择反应监测(SRM)方式进行正离子检测。用于定量分析的离子反应分别为m/z 130→m/z 60(二甲双胍)，m/z 446→m/z 321(格列吡嗪)和m/z 256→m/z 167(内标，苯海拉明)。测定血浆中二甲双胍的线性范围为2.00～2 000 ng·mL^-1， 定量下限为2.00 ng·mL^-1； 格列吡嗪的线性范围为1.00～1 000 ng·mL^-1， 定量下限为1.00 ng·mL^-1。该方法专属性好，灵敏度高，准确快捷，适用于二甲双胍和格列吡嗪的临床药代动力学研究。     

LC-MS/MS测定人血浆中哌甲酯

目的建立LC-MS/MS测定人血浆中盐酸哌甲酯的浓度。方法待测血浆1.0 mL,经1 mol.L-1的氢氧化钠40μL碱化后,用4 mL乙醚萃取处理,采用Eclipse XDB-C18（4.6 mm×150 mm,5μm）色谱柱,以甲醇和水为流动相梯度洗脱,流速1.0 mL·min^-1。以电喷雾正离子源离子化,检测离子对盐酸哌甲酯为234.0/84.0,内标卡马西平为237.0/194.0。结果血浆中内源性物质对测定无干扰,最低定量限为0.1 ng·mL^-1,在1-100 ng·mL^-1内盐酸哌甲酯线性关系良好（r=0.999 1）,日内、日间RSD均小于8%,样品分析时间为10 min。结论该法专属性强、灵敏度高,操作简便快速,测定结果可靠,适于进行盐酸哌甲酯血药浓度监测。     

人血浆中卡巴拉汀及其代谢物NAP226-90的LC-MS/MS测定研究

目的：建立LC-MS/MS法同时检测卡巴拉汀及其代谢物NAP226-90血药浓度。方法：血浆经甲基叔丁基醚-二氯甲烷提取预处理,用Phenomenex-curocil PFP（250 mm×4.6 mm,5μm）色谱柱,0.1%甲酸0.05%甲酸铵溶液-0.1%甲酸0.05%甲酸铵甲醇为流动相,梯度洗脱分离,ESI正离子化三重四极杆质谱MRM测定,检测反应离子对：卡巴拉汀m/z 251.0→206.0、NAP226-90 m/z 166.0→121.0、内标（美托洛尔）m/z 268.4→74.3。结果：卡巴拉汀及NAP226-90血药浓度在0.2～30 ng·mL-1范围内均线性关系良好,定量下限均为0.2 ng·mL-1,经方法学验证符合生物样品测定要求。结论：建立的LC-MS/MS方法可用于重酒石酸卡巴拉汀胶囊人体药动学研究。     

达原饮中芍药苷和黄芩苷在大鼠体内药动学研究

目的:建立同时测定大鼠血浆中芍药苷和黄芩苷浓度的高效液相色谱-串联质谱(LC-MS/MS)方法,并研究大鼠体内达原饮的药代动力学。方法:采用蛋白质沉淀法处理血浆样品,色谱柱为Inersil ODS柱(4.6 mm×50 mm,5μm),流动相为水-乙腈梯度洗脱,柱温为35℃;流速为0.5 mL·min^-1。质谱采用电喷雾离子源(ESI),选择离子反应监测(SRM)模式。结果:该方法准确度、精密度、回收率和基质效应均符合生物基质样品测试要求,芍药苷和黄芩苷的线性范围均为5~2000 ng·mL^-1。芍药苷和黄芩苷的药代动力学参数AUC为(2.300374×10^4±7.42703×10^3)、(2.3423881×10^5±6.678954×10^4)ng·mL^-1·min;T1/2z为(126.65±34.65)、(168.18±46.44)min;Tmax为(30.00±0)、(27.50±6.12)min;Cmax为(170.44±53.76)、(1645.42±464.35)ng·mL^-1。结论:建立的大鼠血浆中芍药苷和黄芩苷浓度测定的LC-MS/MS方法简便易行,准确灵敏,适用于达原饮在大鼠体内的药代动力学研究。     

HPLC-MS/MS法测定人体血浆中吲哒帕胺的浓度

目的:建立一种简便、灵敏的测定人体血浆中吲哒帕胺浓度的高效液相色谱-串联质谱(HPLC-MS/MS)方法。方法:以瑞格列奈钙为内标,采用乙腈:0.1%甲酸水溶液=90∶10为流动相,以Agilent-ZORBAX-C18柱(2.1mm×150mm,5.0m)色谱柱为分析柱,通过电喷雾离子源(ESI),以正离子多反应监测(MRM)方式进行进样检测。检测离子为[M+H]+m/z 364.1m/z 188.8(吲哒帕胺)和[M+H]+m/z 451.1m/z 134.8(瑞格列奈钙,内标)。结果:吲哒帕胺线性范围为0.5～50ng/mL,定量下限为0.5ng/mL,线性关系良好;高、中、低三个浓度的日内、日间的RSD均<15%,平均回收率为94.60%～110.33%。结论:本方法专属性强,操作简便,灵敏度高,适用于吲哒帕胺制剂的临床药动学研究。     

LC-MS/MS method for the simultaneous determination of icariin and its major metabolites in rat plasma

A rapid and sensitive method using liquid chromatography-tandem mass spectroscopy (LC-MS/MS) was developed and validated for the simultaneous quantitative determination of icariin and its two major metabolites, icariside I and icariside II in rat plasma. The analytes were extracted by liquid-liquid extraction with ethyl acetate after internal standard (daidzein) spiked. The separation was performed by a ZORBAX SB-C(18) column (3.5 microm, 2.1 mm x 100 mm) and a C(18) guard column (5 microm, 4.0 mm x 2.0mm) with an isocratic mobile phase consisting of acetonitrile-water-formic acid (50:50:0.05, v/v/v) at a flow rate of 0.25 mL/min. The Agilent G6410A triple quadrupole LC-MS system was operated under the multiple reaction monitoring (MRM) mode using the electrospray ionization technique in positive mode. The nominal retention times for icariin, icariside I, icariside II and daidzein were 1.21, 1.88, 2.34 and 1.35 min, respectively. The lower limits of quantification (LLOQ) of icariin, icariside I and icariside II of the method were 1.0, 0.5 and 0.5 ng/mL, respectively. The method was linear for icariin and its metabolites with correlation coefficients >0.995 for all analytes. The intra-day and inter-day accuracy and precision of the assay were less than 12.5%. This method has been applied successfully to a pharmacokinetic study involving the intragastric administration of icariin to rats.     

Simultaneous determination of GFA and its active metabolites in human plasma by liquid chromatography electrospray ionization mass spectrometry and its application to pharmacokinetic studies

A sensitive and rapid liquid chromatography electrospray ionization mass spectrometry (LC-ESI-MS) method has been developed and validated for simultaneous quantification of guanfu base A (GFA) and its metabolites guanfu base I (GFI) and guanfu alcohol-amine (AA) in human plasma with phenoprolamine hydrochloride (DDPH) as the internal standard. The analytes were extracted from human plasma by using liquid-liquid extraction with ethyl acetate and the LC separation was performed on a Diamonsil C(18) analytical column (150 mm x 2.1 mm i.d., 5 microm). The MS acquisition was performed in selected ion monitoring (SIM) mode of positive ions. Analysis was carried out in SIM mode at m/z 430.25 for GFA [M+H](+), m/z 388.25 for GFI [M+H](+), m/z 346.25 for AA [M+H](+) and m/z 344.20 for the IS DDPH [M+H](+). The calibration curves were linear over the range of 50-5000 ng/mL for GFA and 5-1000 ng/mL for GFI and AA, with coefficients of correlation above 0.999. The lower limit of quantification for GFA was 1 ng/mL, while for GFI and AA were both 5 ng/mL. The intra- and inter-day precisions (CV) of analysis were within 9%, and the accuracy ranged from 91% to 108%. The overall recoveries for GFA, GFI and AA were about 94.2%, 87.8% and 80.6%, respectively. The total LC-MS run-time was only 5.5 min. This quantitation method was successfully applied to the simultaneous determination of GFA and its metabolites in human plasma for the metabolic study and pharmacokinetic evaluation.     

左旋氨氯地平片在Beagle犬体内的药动学研究

目的建立一种快速、灵敏测定Beagle犬血浆中左旋氨氯地平浓度的高效液相色谱-串联质谱(LC-MS/MS)法,研究左旋氨氯地平片在Beagle犬体内的药动学。方法色谱条件采用Phenomenex Synergi Hydro-RP C18色谱柱(30 mm×2mm,4μm);流动相:0.1%甲酸水–0.1%甲酸甲醇,梯度洗脱;体积流量:0.6 m L/min;柱温:室温;进样量:20μL。质谱条件电喷雾离子源(ESI);多级反应监测(MRM);正离子模式;喷雾气温度(TEM):400℃;雾化气(GS1):344.95k Pa;加热辅助气(GS2):413.7 k Pa;气帘气(CUR):206.85 k Pa;碰撞气(CAD):68.95 k Pa;离子喷雾电压(IS):5 500V;扫描时间:200 ms;用于定量分析的MRM离子对分别为左旋氨氯地平m/z 409.0→238.1,内标硝苯地平m/z 347.0→315.2、347.0→271.3。6只Beagle犬灌服6.8 mg/kg苯磺酸左旋氨氯地平片后,以硝苯地平为内标,血浆样品经醋酸乙酯萃取。绘制左旋氨氯地平的药–时曲线,计算主要药动学参数。结果左旋氨氯地平在0.05~20.00 ng/m L线性关系良好,定量下限为0.05 ng/m L。批内、批间精密度RSD值均小于10%,平均提取回收率为89.3%~93.6%,基质效应为99.9%~102.7%。主要药动学参数Cmax=(6.47±0.72)μg/L,tmax=(2.3±0.5)h,t1/2=(11.0±4.6)h,MRT=(15.6±6.8)h,AUC0-t=(68.81±19.29)h·μg/L,AUC0-∞=(71.58±20.35)h·μg/L。结论本法特异、灵敏、准确、可靠,可用于Beagle犬血浆中左旋氨氯地平的药物浓度测定及左旋氨氯地平片药动力学研究。     

Development and validation of amisulpride in human plasma by HPLC coupled with tandem mass spectrometry and its application to a pharmacokinetic study

In this study, authors developed a simple, sensitive and specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for quantification of Amisulpride in human plasma using Amisulpride-d(5) as an internal standard (IS). Chromatographic separation was performed on Zorbax Bonus-RP C18, 4.6 × 75 mm, 3.5 μm column with an isocratic mobile phase composed of 0.2% formic acid:methanol (35:65 v/v), at a flow-rate of 0.5 mL/min. Amisulpride, Amisulpride-d(5) was detected at m/z 370.1→242.1 and 375.1→242.1. The drug and the IS were extracted by a liquid-liquid extraction method. The method was validated over a linear concentration range of 2.0-2500.0 ng/mL for Amisulpride with a correlation coefficient of (r(2)) ≥ 0.9982. This method demonstrated intra- and inter-day precision within 0.9 to 1.7 and 1.5 to 2.8 % and intra- and inter-day accuracy within 98.3 to 101.5 and 96.0 to 101.0 % for Amisulpride. Amisulpride was found to be stable at 3 freeze-thaw cycles, bench top and auto sampler stability studies. The developed method was successfully applied to a pharmacokinetic study.     

盐酸曲美他嗪片在健康人体内的药代动力学研究及生物等效性评价

目的:建立人血浆中盐酸曲美他嗪浓度的LC-MS/MS法,并用于盐酸曲美他嗪片的药代动力学和生物等效性研究。方法:采用自身双交叉试验设计,20名男性受试者随机分成2组,分别单剂量口服20 mg受试制剂或参比制剂,0～24 h间隔采集血样。以LC-MS/MS内标法(盐酸丁咯地尔)测定盐酸曲美他嗪血药浓度,采用Inertsil ODS-2色谱柱(250 mm×4.6 mm,5μm),流动相为甲醇-含0.1%甲酸、0.2%醋酸铵的水溶液(55∶45,v/v);多反应监测[M+H]+离子通道分别为m/z 267→181(曲美他嗪)和m/z 308→237(丁咯地尔)。DAS 2.1计算药代动力学参数。结果:建立的LC-MS/MS法在0.5～200μg.L-1范围内线性关系良好,最低检测限为0.05μg.L-1,批内及批间精密度RSD均小于15%。受试制剂与参比制剂的Tmax分别为(1.8±0.7)h和(1.8±0.8)h,Cmax分别为(60.1±10.7)μg.L-1和(59.6±10.5)μg.L-1,t1/2分别为(6.1±1.1)h和(6.1±1.0)h,AUC0-24 h分别为(518±126)h.μg.L-1和(518±120)h.μg.L-1。结论:建立的LC-MS/MS法准确可靠,可用于盐酸曲美他嗪片的药代动力学和生物等效性评价。