Drug test screen for:
Cannabinoids -- (marijuana, hash)
Cocaine -- (cocaine, crack, benzoylecognine)
Amphetamines -- (amphetamines, methamphetamines, speed)
Opiates -- (heroin, opium, codeine, morphine)
Phencyclidine -- (PCP)
EXPNADED drug test screen for:
Barbituates -- (Phenobarbital, Secobarbitol, Butabital)
Hydrocodone -- (Lortab, Vicodin)
Methaqualone -- (Qualuudes)
Benzodiazepines -- (Valium, Librium, Serax, Rohypnol)
Methadone
Propoxyphene -- (Darvon compounds)
Ethanol -- (Alcohol)
MDMA -- (Ecstasy)
Keeping this in mind, you have nothing to worry about regarding the T3. I also believe that Clen would not be detected as it is not an amphetamine.