Hwakyung Choi

Validation of a simultaneous analytical method for the detection of 27 benzodiazepines and metabolites and zolpidem in hair using LC–MS/MS and its application to human and rat hair

Jihyun Kim, Sooyeun Lee, Sanghwan In et al. · Journal of Chromatography B · 2011 · 74 citations

Simultaneous Analytical Method, Medicine, Forensic Toxicology +6

Distribution of methamphetamine and amphetamine in drug abusers’ head hair

Sooyeun Lee, Eunyoung Han, Yonghoon Park et al. · Forensic Science International · 2009 · 53 citations

Substance Abuse, Psychoactive Drug, Psychiatry +8

Simultaneous determination of 18 abused opioids and metabolites in human hair using LC–MS/MS and illegal opioids abuse proven by hair analysis

Jihyun Kim, Dajeong Ji, Soyoung Kang et al. · Journal of Pharmaceutical and Biomedical Analysis · 2013 · 50 citations

Opioid Epidemic, Substance Abuse, Abused Opioids +11

Simultaneous analysis of Δ9-tetrahydrocannabinol and 11-nor-9-carboxy-tetrahydrocannabinol in hair without different sample preparation and derivatization by gas chromatography–tandem mass spectrometry

Eunyoung Han, Yonghoon Park, Eunmi Kim et al. · Journal of Pharmaceutical and Biomedical Analysis · 2011 · 38 citations

Different Sample Preparation, Cannabis Use, Medicine +7

A Fatality Due To Injection of Tiletamine and Zolazepam*

Heesun Chung, Hwakyung Choi, Eun‐Mi Kim et al. · Journal of Analytical Toxicology · 2000 · 33 citations