TH
- TH-PBP
- TH-PHP
- TH-PVP
- THC (Tetrahydrocannabinol)
- THC-COOH
- THC-M (carboxy THC metabolite)
- THC-M (carboxy THC-glucuronide)
- THC-M (hydroxy THC metabolite)
- Theanine
- Thebacon
- Thebaine
- Theobromine
- Theophyline/aminophylline
- Theophylline
- Thiabendazole
- Thiafentanil
- Thiamethoxam
- Thienoamphetamine
- Thienyl Fentanyl
- Thienylfentanyl
- Thiodicarb
- Thiofentanyl
- Thiofuranyl fentanyl
- Thiohomosildenafil
- Thionordazepam
- Thiopental
- Thiophene Fentanyl
- Thioproperazine
- Thioridazine
- Thiosildenafil
- Thiothinon
- THJ
- THJ-018
- THJ-2201
- THJ-2201 (N-Pentanoic acid)
- THJ2201 N-(5-hydroxypentyl) metabolite
- THQ-PINACA