Works by Ojanperä, Ilkka

Results: 60

Pharmacokinetics of oxycodone after intravenous, buccal, intramuscular and gastric administration in children.

Published in:

2004

By:

Kokki, Hannu;
Rasanen, Ilpo;
Reinikainen, Matti;
Suhonen, Pekka;
Vanamo, Kari;
Ojanperä, Ilkka;
Ojanperä, Ilkka

Publication type:

journal article

New psychoactive substances as part of polydrug abuse within opioid maintenance treatment revealed by comprehensive high-resolution mass spectrometric urine drug screening.

Published in:

Human Psychopharmacology: Clinical & Experimental, 2016, v. 31, n. 1, p. 44, doi. 10.1002/hup.2512

By:

Heikman, Pertti;
Sundström, Mira;
Pelander, Anna;
Ojanperä, Ilkka

Publication type:

Article

Role of postmortem toxicology in drowning investigations.

Published in:

Wiley Interdisciplinary Reviews: Forensic Science, 2024, v. 6, n. 2, p. 1, doi. 10.1002/wfs2.1510

By:

Ojanperä, Ilkka;
Kriikku, Pirkko

Publication type:

Article

Ethylene Glycol and Metabolite Concentrations in Fatal Ethylene Glycol Poisonings.

Published in:

Journal of Analytical Toxicology, 2015, v. 39, n. 6, p. 481, doi. 10.1093/jat/bkv044

By:

Viinamäki, Jenni;
Sajantila, Antti;
Ojanperä, Ilkka

Publication type:

Article

Compensation of Matrix Effects in a Standard Addition Method for Metformin in Postmortem Blood Using Liquid Chromatography-Electrospray-Tandem Mass Spectrometry.

Published in:

Journal of Analytical Toxicology, 2015, v. 39, n. 5, p. 359, doi. 10.1093/jat/bkv020

By:

Gergov, Merja;
Nenonen, Timo;
Ojanperä, Ilkka;
Ketola, Raimo A.

Publication type:

Article

Interaction of alcohol and drugs in fatal poisonings.

Published in:

Human & Experimental Toxicology, 2003, v. 22, n. 5, p. 281, doi. 10.1191/0960327103ht324oa

By:

Koski, Anna;
Ojanperä, Ilkka;
Vuori, Erkki

Publication type:

Article

Comparison of poisoning deaths with wastewater‐based consumption estimates and assessment of fatal toxicity for amphetamine‐type stimulant drugs.

Published in:

Drug Testing & Analysis, 2024, v. 16, n. 6, p. 641, doi. 10.1002/dta.3599

By:

Kriikku, Pirkko;
Kankaanpää, Aino;
Gunnar, Teemu;
Ojanperä, Ilkka

Publication type:

Article

Investigation of buprenorphine‐related deaths using urinary metabolite concentrations.

Published in:

Drug Testing & Analysis, 2022, v. 14, n. 10, p. 1696, doi. 10.1002/dta.3347

By:

Mariottini, Claudia;
Kriikku, Pirkko;
Ojanperä, Ilkka

Publication type:

Article

Determination of buprenorphine, norbuprenorphine, naloxone, and their glucuronides in urine by liquid chromatography–tandem mass spectrometry.

Published in:

Drug Testing & Analysis, 2021, v. 13, n. 9, p. 1658, doi. 10.1002/dta.3104

By:

Mariottini, Claudia;
Gergov, Merja;
Ojanperä, Ilkka

Publication type:

Article

Increase in drugs‐of‐abuse findings in post‐mortem toxicology due to COVID‐19 restrictions—First observations in Finland.

Published in:

Drug Testing & Analysis, 2021, v. 13, n. 4, p. 867, doi. 10.1002/dta.2982

By:

Mariottini, Claudia;
Ojanperä, Ilkka;
Kriikku, Pirkko

Publication type:

Article

Summary statistics for drug concentrations in post‐mortem femoral blood representing all causes of death.

Published in:

Drug Testing & Analysis, 2019, v. 11, n. 9, p. 1326, doi. 10.1002/dta.2655

By:

Ketola, Raimo A.;
Ojanperä, Ilkka

Publication type:

Article

Enzymatic assay for urine lactose in the assessment of recent intravenous abuse of buprenorphine.

Published in:

Drug Testing & Analysis, 2019, v. 11, n. 9, p. 1412, doi. 10.1002/dta.2654

By:

Keltanen, Terhi N.;
Heikman, Pertti K.;
Muhonen, Leea H.;
Gunnar, Teemu O.;
Ojanperä, Ilkka A.

Publication type:

Article

Patterns of drug abuse among drug users with regular and irregular attendance for treatment as detected by comprehensive UHPLC-HR-TOF-MS.

Published in:

Drug Testing & Analysis, 2016, v. 8, n. 1, p. 39, doi. 10.1002/dta.1818

By:

Sundström, Mira;
Pelander, Anna;
Simojoki, Kaarlo;
Ojanperä, Ilkka

Publication type:

Article

Comparison between drug screening by immunoassay and ultra-high performance liquid chromatography/high-resolution time-of-flight mass spectrometry in post-mortem urine.

Published in:

Drug Testing & Analysis, 2015, v. 7, n. 5, p. 420, doi. 10.1002/dta.1683

By:

Sundström, Mira;
Pelander, Anna;
Ojanperä, Ilkka

Publication type:

Article

Drug concentrations in post-mortem femoral blood compared with therapeutic concentrations in plasma.

Published in:

Drug Testing & Analysis, 2014, v. 6, n. 4, p. 308, doi. 10.1002/dta.1507

By:

Launiainen, Terhi;
Ojanperä, Ilkka

Publication type:

Article

Urine naloxone concentration at different phases of buprenorphine maintenance treatment.

Published in:

Drug Testing & Analysis, 2014, v. 6, n. 3, p. 220, doi. 10.1002/dta.1464

By:

Heikman, Pertti;
Häkkinen, Margareeta;
Gergov, Merja;
Ojanperä, Ilkka

Publication type:

Article

A rare case of serial killing by poisoning.

Published in:

Drug Testing & Analysis, 2013, v. 5, n. 9/10, p. 725, doi. 10.1002/dta.1480

By:

Vuori, Erkki;
Pelander, Anna;
Rasanen, Ilpo;
Juote, Mikko;
Ojanperä, Ilkka

Publication type:

Article

Meconium drug testing reveals maternal misuse of medicinal opioids among addicted mothers.

Published in:

Drug Testing & Analysis, 2013, v. 5, n. 7, p. 529, doi. 10.1002/dta.1459

By:

Launiainen, Terhi;
Nupponen, Irmeli;
Halmesmäki, Erja;
Ojanperä, Ilkka

Publication type:

Article

Application of electrospray ionization product ion spectra for identification with atmospheric pressure matrix-assisted laser desorption/ionization mass spectrometry - a case study with seized drugs.

Published in:

Drug Testing & Analysis, 2013, v. 5, n. 2, p. 68, doi. 10.1002/dta.1419

By:

Östman, Pekka;
Ketola, Raimo A.;
Ojanperä, Ilkka

Publication type:

Article

Measuring insulin in human vitreous humour using LC-MS/MS.

Published in:

Drug Testing & Analysis, 2012, v. 4, n. 1, p. 53, doi. 10.1002/dta.368

By:

Thevis, Mario;
Thomas, Andreas;
Schänzer, Wilhelm;
Östman, Pekka;
Ojanperä, Ilkka

Publication type:

Article

Differentiation of structural isomers in a target drug database by LC/Q-TOFMS using fragmentation prediction.

Published in:

Drug Testing & Analysis, 2010, v. 2, n. 6, p. 259, doi. 10.1002/dta.134

By:

Tyrkkö, Elli;
Pelander, Anna;
Ojanperä, Ilkka

Publication type:

Article

Generic sample preparation and dual polarity liquid chromatography-time-of-flight mass spectrometry for high-throughput screening in doping analysis.

Published in:

Drug Testing & Analysis, 2009, v. 1, n. 6, p. 250, doi. 10.1002/dta.50

By:

Kolmonen, Marjo;
Leinonen, Antti;
Kuuranne, Tiia;
Pelander, Anna;
Ojanperä, Ilkka

Publication type:

Article

Development of a GC-APCI-QTOFMS library for new psychoactive substances and comparison to a commercial ESI library.

Published in:

Analytical & Bioanalytical Chemistry, 2017, v. 409, n. 8, p. 2007, doi. 10.1007/s00216-016-0148-y

By:

Mesihää, Samuel;
Ketola, Raimo;
Pelander, Anna;
Rasanen, Ilpo;
Ojanperä, Ilkka

Publication type:

Article

Simultaneous identification and quantification of new psychoactive substances in blood by GC-APCI-QTOFMS coupled to nitrogen chemiluminescence detection without authentic reference standards.

Published in:

Analytical & Bioanalytical Chemistry, 2016, v. 408, n. 13, p. 3395, doi. 10.1007/s00216-016-9461-8

By:

Ojanperä, Ilkka;
Mesihää, Samuel;
Rasanen, Ilpo;
Pelander, Anna;
Ketola, Raimo

Publication type:

Article

A high-sensitivity ultra-high performance liquid chromatography/high-resolution time-of-flight mass spectrometry (UHPLC-HR-TOFMS) method for screening synthetic cannabinoids and other drugs of abuse in urine.

Published in:

Analytical & Bioanalytical Chemistry, 2013, v. 405, n. 26, p. 8463, doi. 10.1007/s00216-013-7272-8

By:

Sundström, Mira;
Pelander, Anna;
Angerer, Verena;
Hutter, Melanie;
Kneisel, Stefan;
Ojanperä, Ilkka

Publication type:

Article

In silico and in vitro metabolism studies support identification of designer drugs in human urine by liquid chromatography/quadrupole-time-of-flight mass spectrometry.

Published in:

Analytical & Bioanalytical Chemistry, 2013, v. 405, n. 21, p. 6697, doi. 10.1007/s00216-013-7137-1

By:

Tyrkkö, Elli;
Pelander, Anna;
Ketola, Raimo;
Ojanperä, Ilkka

Publication type:

Article

Combined drug screening and confirmation by liquid chromatography time-of-flight mass spectrometry with reverse database search.

Published in:

Analytical & Bioanalytical Chemistry, 2012, v. 403, n. 5, p. 1265, doi. 10.1007/s00216-012-5889-7

By:

Castro, Ana;
Gergov, Merja;
Östman, Pekka;
Ojanperä, Ilkka;
Pelander, Anna

Publication type:

Article

Current use of high-resolution mass spectrometry in drug screening relevant to clinical and forensic toxicology and doping control.

Published in:

Analytical & Bioanalytical Chemistry, 2012, v. 403, n. 5, p. 1203, doi. 10.1007/s00216-012-5726-z

By:

Ojanperä, Ilkka;
Kolmonen, Marjo;
Pelander, Anna

Publication type:

Article

Specific screening method for dextran and hydroxyethyl starch in human urine by size exclusion chromatography-in-source collision-induced dissociation-time-of-flight mass spectrometry.

Published in:

Analytical & Bioanalytical Chemistry, 2011, v. 401, n. 2, p. 563, doi. 10.1007/s00216-011-4838-1

By:

Kolmonen, Marjo;
Leinonen, Antti;
Kuuranne, Tiia;
Pelander, Anna;
Deventer, Koen;
Ojanperä, Ilkka

Publication type:

Article

Manganese-Enhanced Magnetic Resonance Imaging Reveals Differential Long-Term Neuroadaptation After Methamphetamine and the Substituted Cathinone 4-Methylmethcathinone (Mephedrone).

Published in:

International Journal of Neuropsychopharmacology, 2015, v. 18, n. 6, p. 1, doi. 10.1093/ijnp/pyu106

By:

den Hollander, Bjørnar;
Dudek, Mateusz;
Ojanperä, Ilkka;
Kankuri, Esko;
Hyytiä, Petri;
Korpi, Esa R.

Publication type:

Article

Death following ingestion of MDMA (ecstasy) and moclobemide.

Published in:

Addiction, 2003, v. 98, n. 3, p. 365, doi. 10.1046/j.1360-0443.2003.00292.x

By:

Vuori, Erkki;
Henry, John A.;
Ojanperä, Ilkka;
Nieminen, Raija;
Savolainen, Taru;
Wahlsten, Pia;
Jäntti, Matti

Publication type:

Article

Non‐medical use of psychoactive prescription drugs is associated with fatal poisoning.

Published in:

Addiction, 2018, v. 113, n. 3, p. 464, doi. 10.1111/add.14014

By:

Haukka, Jari;
Kriikku, Pirkko;
Mariottini, Claudia;
Partonen, Timo;
Ojanperä, Ilkka

Publication type:

Article

Fatal concentrations of antidepressant and antipsychotic drugs in postmortem femoral blood.

Published in:

Journal of Analytical Toxicology, 2023, v. 47, n. 7, p. 615, doi. 10.1093/jat/bkad044

By:

Kriikku, Pirkko;
Ojanperä, Ilkka

Publication type:

Article

Quantitative Estimation of 38 Illicit Psychostimulants in Blood by GC-APCI-QTOFMS with Nitrogen Chemiluminescence Detection Based on Three External Calibrators.

Published in:

Journal of Analytical Toxicology, 2020, v. 44, n. 2, p. 163, doi. 10.1093/jat/bkz055

By:

Mesihää, Samuel;
Rasanen, Ilpo;
Pelander, Anna;
Ojanperä, Ilkka

Publication type:

Article

Comparison of Post-targeted and Pre-targeted Urine Drug Screening by UHPLC-HR-QTOFMS.

Published in:

Journal of Analytical Toxicology, 2017, v. 41, n. 7, p. 623, doi. 10.1093/jat/bkx044

By:

Sundström, Mira;
Pelander, Anna;
Ojanperä, Ilkka

Publication type:

Article

Nicotine, Alcohol, and Drug Findings in Young Adults in a Population-Based Postmortem Database.

Published in:

Nicotine & Tobacco Research, 2011, v. 13, n. 9, p. 763, doi. 10.1093/ntr/ntr069

By:

Launiainen, Terhi;
Broms, Ulla;
Keskitalo-Vuokko, Kaisu;
Pitkäniemi, Janne;
Pelander, Anna;
Kaprio, Jaakko;
Ojanperä, Ilkka

Publication type:

Article

Polydrug abuse among opioid maintenance treatment patients is related to inadequate dose of maintenance treatment medicine.

Published in:

BMC Psychiatry, 2017, v. 17, p. 1, doi. 10.1186/s12888-017-1415-y

By:

Heikman, Pertti Kalevi;
Muhonen, Leea Hellevi;
Ojanperä, Ilkka Antero

Publication type:

Article

Buprenorphine deaths confirmed by toxicology reveal a low proportion of opioid agonist treatment before death in Finland.

Published in:

International Journal of Legal Medicine, 2024, v. 138, n. 6, p. 2331, doi. 10.1007/s00414-024-03273-5

By:

Mariottini, Claudia;
Häkkinen, Margareeta;
Kriikku, Pirkko;
Ojanperä, Ilkka

Publication type:

Article

Postmortem concentrations of ropivacaine, bupivacaine, and lidocaine in femoral venous blood after hip fracture surgery.

Published in:

International Journal of Legal Medicine, 2023, v. 137, n. 4, p. 1071, doi. 10.1007/s00414-023-03000-6

By:

Oura, Petteri;
Virtanen, Antti;
Nurkkala, Juho;
Kriikku, Pirkko;
Ojanperä, Ilkka

Publication type:

Article

Post-mortem oxycodone blood concentrations of hospitalized cancer and surgery patients compared with fatal poisonings.

Published in:

International Journal of Legal Medicine, 2022, v. 136, n. 6, p. 1577, doi. 10.1007/s00414-022-02890-2

By:

Kriikku, Pirkko;
Kalso, Eija;
Ojanperä, Ilkka

Publication type:

Article

Fatal toxicity index of medicinal drugs based on a comprehensive toxicology database.

Published in:

International Journal of Legal Medicine, 2016, v. 130, n. 5, p. 1209, doi. 10.1007/s00414-016-1358-8

By:

Ojanperä, Ilkka;
Kriikku, Pirkko;
Vuori, Erkki

Publication type:

Article

The effect of banning MDPV on the incidence of MDPV-positive findings among users of illegal drugs and on court decisions in traffic cases in Finland.

Published in:

International Journal of Legal Medicine, 2015, v. 129, n. 4, p. 741, doi. 10.1007/s00414-015-1184-4

By:

Kriikku, Pirkko;
Rintatalo, Janne;
Pihlainen, Katja;
Hurme, Jukka;
Ojanperä, Ilkka

Publication type:

Article

Fatal venlafaxine poisonings are associated with a high prevalence of drug interactions.

Published in:

International Journal of Legal Medicine, 2011, v. 125, n. 3, p. 349, doi. 10.1007/s00414-010-0461-5

By:

Launiainen, Terhi;
Rasanen, Ilpo;
Vuori, Erkki;
Ojanperä, Ilkka

Publication type:

Article

An epidemic of fatal 3-methylfentanyl poisoning in Estonia.

Published in:

International Journal of Legal Medicine, 2008, v. 122, n. 5, p. 395, doi. 10.1007/s00414-008-0230-x

By:

Ilkka Ojanperä;
Merja Gergov;
Milana Liiv;
Aime Riikoja;
Erkki Vuori

Publication type:

Article

Prevalence of adverse drug combinations in a large post-mortem toxicology database.

Published in:

International Journal of Legal Medicine, 2009, v. 123, n. 2, p. 109, doi. 10.1007/s00414-008-0261-3

By:

Terhi Launiainen;
Erkki Vuori;
Ilkka Ojanperä

Publication type:

Article

Analgesic Concentrations of Oxycodone - A Prospective Clinical PK/PD Study in Patients with Laparoscopic Cholecystectomy.

Published in:

Basic & Clinical Pharmacology & Toxicology, 2012, v. 110, n. 5, p. 469, doi. 10.1111/j.1742-7843.2011.00839.x

By:

Kokki, Merja;
Broms, Susanna;
Eskelinen, Matti;
Rasanen, Ilpo;
Ojanperä, Ilkka;
Kokki, Hannu

Publication type:

Article

Broad-spectrum drug screening of meconium by liquid chromatography with tandem mass spectrometry and time-of-flight mass spectrometry.

Published in:

Analytical & Bioanalytical Chemistry, 2010, v. 398, n. 2, p. 925, doi. 10.1007/s00216-010-3942-y

By:

Ristimaa, Johanna;
Gergov, Merja;
Pelander, Anna;
Halmesmäki, Erja;
Ojanperä, Ilkka

Publication type:

Article

Comparison of oxycodone pharmacokinetics after buccal and sublingual administration in children.

Published in:

2006

By:

Kokki, Hannu;
Rasanen, Ilpo;
Lasalmi, Merja;
Lehtola, Sanna;
Ranta, Veli-Pekka;
Vanamo, Kari;
Ojanperä4;, Ilkka;
Ojanperä, Ilkka

Publication type:

journal article

Toxicological screening of urine for drugs by liquid chromatography/time-of-flight mass spectrometry with automated target library search based on elemental formulas.

Published in:

Rapid Communications in Mass Spectrometry: RCM, 2001, v. 15, n. 8, p. 521, doi. 10.1002/rcm.260

By:

Gergov, Merja;
Boucher, Brian;
Ojanperä, Ilkka;
Vuori, Erkki

Publication type:

Article

Absorption of different oral dosage forms of oxycodone in the elderly: a cross-over clinical trial in patients undergoing cystoscopy.

Published in:

European Journal of Clinical Pharmacology, 2012, v. 68, n. 10, p. 1357, doi. 10.1007/s00228-012-1267-9

By:

Kokki, Merja;
Välitalo, Pyry;
Rasanen, Ilpo;
Aaltomaa, Sirpa;
Ojanperä, Ilkka;
Eskelinen, Matti;
Kokki, Hannu

Publication type:

Article