Minakata, Kayoko
Nozawa, Hideki
Yamagishi, Itaru
Hasegawa, Koutaro
Saitoh, Takeji
Yoshino, Atsuto
Suzuki, Masako
Kitamoto, Takuya
Suzuki, Osamu
Watanabe, Kanako
Article History
Received: 14 May 2018
Accepted: 22 May 2018
First Online: 4 June 2018
Compliance with ethical standards
:
: The authors declare that there are no financial or other relations that could lead to a conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the international and/or national committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. The analysis of the substances from the individual who was suspected by the police of having used illegal drug(s) was permitted by judicial authorities and supported by official documentation. In addition, 5F-NNEI had not been controlled/regulated in July and August 2013 in Japan, when all the authentic human specimens were brought to our laboratory. Informed consent was obtained from all participants included in the study, who supplied about 10 mL each of blood and/or 40 mL each of urine for use as blank specimens.