Explain the analytical examination of suspected drugs from screening to confirmation.

The regime's law: the Narcotic Drugs (Control) Act 2033 (the Nepal statute — the LAW5508 course's face) + the international conventions (the 1961 Single Convention, the 1971 Psychotropic Convention, the 1988 Trafficking Convention). The classification (the exam's frame):1. The narcotics proper (the opioids — the opium, morphine, heroin; the coca-cocaine line).2. The cannabis group (the ganja, charas, hashish — the plant's products).3. The depressants (the sedatives, the benzodiazepines).4. The stimulants (the amphetamines, the methamphetamine's rise).5. The hallucinogens (the LSD, the psilocybin).6. The new psychoactive substances (the NPS — the synthetic's innovation race against the schedules). The schedules' logic (the medical-use-vs-abuse-potential grading — the control's levels).