Originally Posted by
LoganTSO
[The Ionscan 400B] is most common ETD machine in use with TSA to my knowledge. It can only be set in one mode. Explosives or naracotics. [...]
In narc mode, it'll only hit on: Cocaine, Heroin, PCP, THC, Methamphetamine, Ecstasy, LSD and others
Of those substances, only heroin is a
narcotic.