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A liquid chromatography and tandem mass spectrometry method to determine 28 non-volatile drugs of abuse in exhaled breath
Ullah S, Sandqvist S, Beck O
Journal of pharmaceutical and biomedical analysis 2018;148():251-258

Drug abuse screening with exhaled breath and oral fluid in adults with substance use disorder
Arvidsson M, Ullah S, Franck J, Dahl Ml, Beck O
Drug testing and analysis 2018;():-

Evaluation of a new simple collection device for sampling of microparticles in exhaled breath
Seferaj S, Ullah S, Tinglev Å, Carlsson S, Winberg J, Stambeck P, et al
Journal of breath research 2018;12(3):036005-

Combinatory effects of low concentrations of 17α-etinylestradiol and citalopram on non-reproductive behavior in adult zebrafish (Danio rerio)
Porseryd T, Kellner M, Reyhanian Caspillo N, Volkova K, Elabbas L, Ullah S, et al
Aquatic toxicology (Amsterdam, Netherlands) 2017;193():9-17

Endogenous and xenobiotic metabolic stability of primary human hepatocytes in long-term 3D spheroid cultures revealed by a combination of targeted and untargeted metabolomics
Vorrink Su, Ullah S, Schmidt S, Nandania J, Velagapudi V, Beck O, et al
FASEB journal : official publication of the Federation of American Societies for Experimental Biology 2017;31(6):2696-2708

Identification and quantitation of phosphatidylethanols in oral fluid by liquid chromatography-tandem mass spectrometry
Ullah S, Helander A, Beck O
Clinical chemistry and laboratory medicine 2017;55(9):1332-1339

Two techniques to sample non-volatiles in breath-exemplified by methadone
Ljungkvist G, Ullah S, Tinglev Å, Stein K, Bake B, Larsson P, et al
Journal of breath research 2017;12(1):016011-

Characterization of exhaled breath particles collected by an electret filter technique
Tinglev Åd, Ullah S, Ljungkvist G, Viklund E, Olin Ac, Beck O
Journal of breath research 2016;10(2):026001-

Measurement of Lung Phosphatidylcholines in Exhaled Breath Particles by a Convenient Collection Procedure
Ullah S, Sandqvist S, Beck O
Analytical chemistry 2015;87(22):11553-60

Phosphatidylethanols in breath: a possible noninvasive screening test for heavy alcohol consumption
Helander A, Ullah S, Beck O
Clinical chemistry 2015;61(7):991-3

Temporal trends of perfluoroalkane sulfonic acids and their sulfonamide-based precursors in herring from the Swedish west coast 1991-2011 including isomer-specific considerations
Ullah S, Huber S, Bignert A, Berger U

Polyfluoroalkyl phosphate esters and perfluoroalkyl carboxylic acids in target food samples and packaging-method development and screening
Gebbink Wa, Ullah S, Sandblom O, Berger U

A matrix effect-free method for reliable quantification of perfluoroalkyl carboxylic acids and perfluoroalkane sulfonic acids at low parts per trillion levels in dietary samples
Vestergren R, Ullah S, Cousins It, Berger U

Determination of perfluoroalkyl carboxylic, sulfonic, and phosphonic acids in food
Ullah S, Alsberg T, Vestergren R, Berger U

Perfluorinated alkyl acids in blood serum from primiparous women in Sweden: serial sampling during pregnancy and nursing, and temporal trends 1996-2010
Glynn A, Berger U, Bignert A, Ullah S, Aune M, Lignell S, et al
Environmental science & technology 2012;46(16):9071-9

Simultaneous determination of perfluoroalkyl phosphonates, carboxylates, and sulfonates in drinking water
Ullah S, Alsberg T, Berger U
JOURNAL OF CHROMATOGRAPHY A 2011;1218(37):6388-95

Precise determination of glucose-d(2)/glucose ratio in human serum and plasma by APCI LC-MS/MS
Ullah S, Wahren J, Beck O
Scandinavian journal of clinical and laboratory investigation 2009;69(8):837-42

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