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Detection of diazepam in urine, hair and preserved oral fluid samples with LC-MS-MS after single and repeated administration of Myolastan® and Valium®
TLDR
It is demonstrated that diazepam can be observed in urine samples even after a single dose of Myolastan®, and the possible metabolic conversion of tetrazepam todiazepam is a more plausible explanation for the detection of diazep am in biological samples after the intake of Myoliastan®,.
Quantification of methadone and its metabolite 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine in third instar larvae of Lucilia sericata (Diptera: Calliphoridae) using liquid chromatography-tandem
TLDR
The development and validation of a sensitive liquid chromatography tandem mass spectrometry method for quantification of methadone and its main metabolite, 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP), in developmental stages of Lucilia sericata is described.
Validation of a liquid chromatography-tandem mass spectrometry method for the simultaneous determination of 26 benzodiazepines and metabolites, zolpidem and zopiclone, in blood, urine, and hair.
TLDR
A liquid chromatography-tandem mass spectrometry method was developed for the simultaneous quantification of 26 benzodiazepines and metabolites, zolpidem and zopiclone, in blood, urine, and hair, and the validated assay was applied to authentic blood, urinary and hair samples from forensic cases.
Determination of Antidepressants in Hair via UHPLC-MS/MS as a Complementary Informative Tool for Clinical and Forensic Toxicological Assessments
TLDR
A fast and sensitive ultra-high performance liquid chromatography tandem mass spectrometry method using a BEH C18 column with a mobile phase consisting of ammonium acetate/acetonitrile was developed and validated according to international guidelines for the simultaneous analysis of 24 antidepressants in hair.
Quantitative analysis of delta9-tetrahydrocannabinol in preserved oral fluid by liquid chromatography-tandem mass spectrometry.
TLDR
A rapid and sensitive method for the analysis of delta9-tetrahydrocannabinol (THC) in preserved oral fluid was developed and fully validated and demonstrated to be highly effective and led to significant decreases in the interferences present in the matrix.
Impact of the grinding process on the quantification of ethyl glucuronide in hair using a validated UPLC-ESI-MS-MS method.
TLDR
It is of interest to standardize sample preparation techniques in the field of EtG hair testing, as the differences in results can lead to a different interpretation even when applying the SoHT cutoffs.
Validation of an automated solid-phase extraction method for the analysis of 23 opioids, cocaine, and metabolites in urine with ultra-performance liquid chromatography-tandem mass spectrometry.
TLDR
This method was applied to authentic samples and to proficiency testing schemes containing cocaine, heroin, buprenorphine and methadone, offering fast and reliable results.
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