| Isotopic pattern and accurate mass determination in urine drug screening by liquid chromatography/time‐of‐flight mass spectrometry S Ojanperä, A Pelander, M Pelzing, I Krebs, E Vuori, I Ojanperä Rapid Communications in Mass Spectrometry: An International Journal Devoted …, 2006 | 257 | 2006 |
| Current use of high-resolution mass spectrometry in drug screening relevant to clinical and forensic toxicology and doping control I Ojanperä, M Kolmonen, A Pelander Analytical and bioanalytical chemistry 403, 1203-1220, 2012 | 249 | 2012 |
| Simultaneous screening for 238 drugs in blood by liquid chromatography–ionspray tandem mass spectrometry with multiple-reaction monitoring M Gergov, I Ojanperä, E Vuori Journal of Chromatography B 795 (1), 41-53, 2003 | 229 | 2003 |
| A general screening method for doping agents in human urine by solid phase extraction and liquid chromatography/time-of-flight mass spectrometry M Kolmonen, A Leinonen, A Pelander, I Ojanperä Analytica chimica acta 585 (1), 94-102, 2007 | 205 | 2007 |
| Toxicological screening with formula-based metabolite identification by liquid chromatography/time-of-flight mass spectrometry A Pelander, I Ojanperä, S Laks, I Rasanen, E Vuori Analytical chemistry 75 (21), 5710-5718, 2003 | 193 | 2003 |
| Simultaneous screening and quantification of 25 opioid drugs in post-mortem blood and urine by liquid chromatography–tandem mass spectrometry M Gergov, P Nokua, E Vuori, I Ojanperä Forensic science international 186 (1-3), 36-43, 2009 | 175 | 2009 |
| Profiles of pregabalin and gabapentin abuse by postmortem toxicology M Häkkinen, E Vuori, E Kalso, M Gergov, I Ojanperä Forensic science international 241, 1-6, 2014 | 165 | 2014 |
| Alcohol and drugs in suicides A Ohberg, E Vuori, I Ojanperä, J Lonnqvist The British Journal of Psychiatry 169 (1), 75-80, 1996 | 159 | 1996 |
| A high-sensitivity ultra-high performance liquid chromatography/high-resolution time-of-flight mass spectrometry (UHPLC-HR-TOFMS) method for screening synthetic cannabinoids … M Sundström, A Pelander, V Angerer, M Hutter, S Kneisel, I Ojanperä Analytical and bioanalytical chemistry 405 (26), 8463-8474, 2013 | 155 | 2013 |
| Benzodiazepines and alcohol are associated with cases of fatal buprenorphine poisoning M Häkkinen, T Launiainen, E Vuori, I Ojanperä European journal of clinical pharmacology 68, 301-309, 2012 | 147 | 2012 |
| Post-mortem SNP analysis of CYP2D6 gene reveals correlation between genotype and opioid drug (tramadol) metabolite ratios in blood A Levo, A Koski, I Ojanperä, E Vuori, A Sajantila Forensic science international 135 (1), 9-15, 2003 | 144 | 2003 |
| Long-term cognitive and neurochemical effects of “bath salt” designer drugs methylone and mephedrone B den Hollander, S Rozov, AM Linden, M Uusi-Oukari, I Ojanperä, ... Pharmacology Biochemistry and Behavior 103 (3), 501-509, 2013 | 135 | 2013 |
| Death following ingestion of MDMA (ecstasy) and moclobemide E Vuori, JA Henry, I Ojanperä, R Nieminen, T Savolainen, P Wahlsten, ... Addiction 98 (3), 365-368, 2003 | 135 | 2003 |
| Fatal poisoning in drug addicts in the Nordic countries in 2012 KW Simonsen, HME Edvardsen, G Thelander, I Ojanperä, S Thordardottir, ... Forensic science international 248, 172-180, 2015 | 131 | 2015 |
| Drug concentrations in post‐mortem femoral blood compared with therapeutic concentrations in plasma T Launiainen, I Ojanperä Drug testing and analysis 6 (4), 308-316, 2014 | 131 | 2014 |
| Comparison of fatal poisonings by prescription opioids M Häkkinen, T Launiainen, E Vuori, I Ojanperä Forensic science international 222 (1-3), 327-331, 2012 | 116 | 2012 |
| Toxicological screening of urine for drugs by liquid chromatography/time‐of‐flight mass spectrometry with automated target library search based on elemental formulas M Gergov, B Boucher, I Ojanperä, E Vuori Rapid Communications in Mass Spectrometry 15 (8), 521-526, 2001 | 114 | 2001 |
| Automated liquid chromatographic/tandem mass spectrometric method for screening β‐blocking drugs in urine M Gergov, JN Robson, E Duchoslav, I Ojanperä Journal of mass spectrometry 35 (7), 912-918, 2000 | 113 | 2000 |
| Alcohol and benzodiazepines in fatal poisonings A Koski, I Ojanperä, E Vuori Alcoholism: Clinical and Experimental Research 26 (7), 956-959, 2002 | 105 | 2002 |
| Simultaneous screening and quantitation of 18 antihistamine drugs in blood by liquid chromatography ionspray tandem mass spectrometry M Gergov, JN Robson, I Ojanperä, OP Heinonen, E Vuori Forensic science international 121 (1-2), 108-115, 2001 | 99 | 2001 |
Pirkko KriikkuFinnish Institute for Health and Welfare (THL), HelsinkiVerificeret mail på thl.fi