A 5 panel standard 1200 drug test is a urine drug screen that checks for five categories of commonly abused substances using federally established cutoff levels. The “1200” is a test code used by major laboratories to identify this specific panel configuration. It’s the most widely ordered workplace drug test in the United States, required for all federal employees and Department of Transportation workers, and commonly used by private employers as well.
The Five Drug Categories
The test screens for five classes of drugs established by the Substance Abuse and Mental Health Services Administration (SAMHSA):
- Marijuana (THC): Detects the primary metabolite your body produces after processing THC.
- Cocaine: Detects a cocaine byproduct that remains in urine after the drug is metabolized.
- Opiates and opioids: Covers heroin, codeine, morphine, hydrocodone, hydromorphone, oxycodone, and oxymorphone.
- Amphetamines: Includes amphetamine, methamphetamine, MDMA (ecstasy), and MDA.
- Phencyclidine (PCP): Sometimes called angel dust.
This is the same panel used for DOT-regulated testing of truck drivers, pilots, and transit workers. Private employers can add substances beyond these five under their own authority, but the standard 5 panel sticks to these categories.
How the Test Works
The process starts with a urine sample collected at a certified facility. The lab runs an initial screening called an immunoassay, which uses antibodies to detect drug metabolites above a set threshold. If your sample falls below every cutoff, the result is reported as negative, and that’s the end of it.
If the initial screen flags a substance, the lab doesn’t report it as positive right away. Instead, the same sample goes through a second, more precise analysis using advanced techniques that separate and identify individual compounds at the molecular level. This confirmation step exists specifically to eliminate false positives. Over-the-counter medications, poppy seeds, and other innocent exposures can sometimes trigger the initial screen, but the confirmatory test can distinguish those from actual drug use with much greater accuracy.
Cutoff Levels That Determine a Positive
Each substance has a specific concentration threshold measured in nanograms per milliliter (ng/mL). If the amount in your urine falls below the cutoff, the result is negative, even if trace amounts are technically present. The federal cutoffs set by the Department of Transportation are:
- Marijuana (THC): 50 ng/mL on the initial screen, 15 ng/mL on the confirmation test
- Cocaine: 150 ng/mL initial, 100 ng/mL confirmation
- Opiates (codeine/morphine): 2,000 ng/mL for both initial and confirmation
- Opioids (hydrocodone, oxycodone): 100–300 ng/mL initial, 100 ng/mL confirmation
- Amphetamines: 500 ng/mL initial, 250 ng/mL confirmation
- PCP: 25 ng/mL for both stages
Notice that the confirmation cutoffs are often lower than the initial screen. This means the confirmation test is actually more sensitive, not less. The initial screen casts a wide net, and the confirmation narrows it down with precision.
How Long Substances Stay Detectable
Most drugs are detectable in urine for one to three days after use, depending on how quickly your body metabolizes and excretes them. Marijuana is the major exception. Because THC is fat-soluble, it gets stored in body fat and releases slowly over time. Occasional users may test positive for up to a week, while heavy, daily users can remain positive for several weeks or even longer.
Factors like body weight, hydration, metabolism, and frequency of use all influence detection windows. A single use of cocaine, for example, typically clears within two to three days, while amphetamines follow a similar timeline. PCP can linger somewhat longer in heavy users.
What Happens After a Positive Result
A confirmed positive doesn’t automatically go straight to your employer. The result first goes to a Medical Review Officer (MRO), a licensed physician who serves as an independent gatekeeper for the testing process. The MRO contacts you directly and asks whether you have a legitimate medical explanation for the result, such as a valid prescription for an opioid painkiller or a prescribed amphetamine-based medication for ADHD.
If you can document a current prescription from a licensed provider, the MRO can report the test as negative to your employer. Your specific prescription information stays confidential. If there’s no legitimate medical explanation, the MRO reports the result as a verified positive.
DOT vs. Private Employer Testing
For DOT-regulated positions (commercial drivers, airline employees, railroad workers, pipeline operators), the 5 panel urine test is mandatory, and the procedures are strictly defined by federal regulation. Employers cannot substitute a different specimen type or skip any steps in the process. DOT tests also include an alcohol screening component, with a threshold of 0.02 blood alcohol concentration.
Private employers have more flexibility. They can use the same standard 5 panel as their baseline but add extra substances like benzodiazepines, barbiturates, or synthetic opioids under their own company policy. They can also use alternative specimen types like oral fluid or hair, though urine remains the most common. Any additional testing beyond the DOT requirements must be clearly identified as a separate, non-DOT test.
The lab also runs specimen validity testing on every urine sample, checking for signs of tampering like unusual pH levels, abnormal creatinine concentration, or the presence of oxidizing agents. A sample that appears diluted or adulterated gets flagged, and you may be required to retest under direct observation.