Publications by authors named "J Ahlner"

Article Synopsis
  • * Data was collected from 302 ICU admissions, examining 10 different drugs, with daily dosages recorded and blood samples taken twice a day for measurement.
  • * Results revealed that while drug dosages were within recommended ranges, there was significant variation in blood concentrations, yet 97% remained below the upper therapeutic limit, indicating effective monitoring practices.
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Although beta-hydroxybutyrate (BHB) analysis has proved its importance in forensic pathology, its effects on cause-of-death diagnostics are unaddressed. Therefore, this study aims at evaluating the effects of BHB analysis on the number of deaths by DKA (diabetes ketoacidosis), AKA (alcoholic ketoacidosis), HHS (hyperosmolar hyperglycaemic state), hypothermia, diabetes, alcoholism, and acidosis NOS (not otherwise specified). All 2900 deaths from 2013 through 2019 in which BHB was analysed at the National Board of Forensic Medicine, and 1069 DKA, AKA, HHS, hypothermia, diabetes, alcoholism, and acidosis cases without BHB analysis were included.

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Background And Objectives: Oxycodone is frequently prescribed as well as detected in postmortem cases. Concurrent use of pharmacodynamically or pharmacokinetically interacting drugs can cause adverse effects or even fatal intoxication. The aims of this study were to investigate differences in prescriptions for and toxicological findings of pharmacodynamically and pharmacokinetically interacting drugs in fatal oxycodone-related intoxications and other causes of death.

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At the Swedish national forensic toxicology laboratory, a measured testosterone/epitestosterone (T/E) ratio ≥ 12 together with testosterone/luteinizing hormone (T/LH) in urine > 400 nmol/IU is considered as a proof of exogenous testosterone administration. However, according to the rules of the World Anti-Doping Agency (WADA), samples with T/E ratio > 4 are considered suspicious and shall be further analysed by gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS) to confirm the origin of testosterone and its metabolites. The aim of this study was to investigate the possibility of false negative results and to estimate the frequency of negative results using the current criteria for detection of abuse of testosterone in forensic investigations.

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Article Synopsis
  • A sensitive and accurate ESI-LC-MS/MS method was developed to measure testosterone levels in human serum and saliva, crucial for diagnosing androgen status in various populations and forensic investigations.
  • The chromatography used an HSS-T3 C18 column with a quick 5.5-minute run time, while tandem mass spectrometry operated in positive electrospray ionization mode for precise quantification.
  • The method demonstrated high accuracy (99-101% for serum, 93-95% for saliva) and a wide applicability for testosterone detection across different sample types and concentrations.
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