The most common drug test is the NIDA 5. It tests for 5 specific classes of drug groups - it does not test for specific drugs. The NIDA 5 checks for:
1. Cannabinoids (e.g., marijuana, hashish)
2. Cocaine (e.g., cocaine, crack)
3. Amphetamines (e.g., amphetamines, methamphetamine, MDMA)
4. Opiates (e.g., heroin, opium, codeine, morphine)
5. Phencyclidine (e.g., PCP)
Most employers stick to the NIDA 5 b/c it's cheap & easy. The NIDA 5 does not check for most synthetic & semisynthetic opioids. Hydrocodone is a semisynthetic opioid & therefore probably won't show up on SWIYs drug test.
However, many employers are now using enhanced drug testing to check for specific substances. These tests do test for the more common synthetic & semisynthetic pain killers (e.g., Oxycodone, Oxymorphone, Hydrocodone, Hydromorphone), benzodiazepines (e.g., Valium, Xanax, Klonopin, Restoril) and barbiturates. Rarely (but more frequently if there is suspicion of drug use), employers are beginning to test for other substances as well (e.g. Meperidine, Fentanyl, Propoxyphene, Methadone, LSD, Psilocybin, Mescaline, GHB, Ketamine).
Employers are now also performing more quantitative drug testing to check for amount & frequency of use (e.g., hair testing), & discriminative drug testing to check identify or distinguish among the specific classes of NIDA 5 drugs (e.g., to between methamphetamine and MDMA &/or other amphetamine analogs).