Which drugs do they commonly test for?
Marijuana (THC), Cocaine "Crack", PCP "Angel Dust", Opiates (Heroin, Codeine, Morphine), Amphetamines and Methamphetamines. Barbiturates: Phenobarbital (Donnatal), Seconbarbital (Seconal), Amobarbital, Pentobarbital (Nembutal), and Butalbital (Fiorinal or Fiorcet). Benzodiazepines: Diazepam (Valium), Oxazepam (Serax), Chlordiazepoxide (Librium), Chlorazepate (Tranxene), Temazepam (Restoril), Alprazolam (Xanax), Triazolam (Halcion), Lorazepam (Ativan), Prazepam (Centrax), Methadone, Propoxyphene (Darvon or Darvocet).
Drugs that give positive Opiate results
The following table shows drugs that can give rise to positive initial opiate screens.
| Drugs | Over the counter preparations (OTC) |
| Codeine | Benylin |
| Dihydrocodeine | Calpol |
| Morphine | Co-Codamol |
| 6-monoacetylmorphine (6-MAM) | Co-Dydramol |
| Kaolin | |
| Paracodol | |
| Pholcodine | |
| Propain |
Drugs that give positive amphetamine results
The following table shows drugs that can give rise to positive initial amphetamine screens.
| Drugs that can give rise to positive amphetamine screening results | |
| Amphetamines | Other stimulant drugs |
| d and l Amphetamine | MDA |
| Methamphetamine | MDMA |
| (Dexedrine) | MDEA |
| Ephedrine | |
| Norpseudoephedrine | |
| Phenylpropanolamine | |
| Pseudoephedrine (Sudafed) | |
| Phentermine | |
| Fenfluramine (Ponderax) | |

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