What Drugs Are Tested in a 5-Panel Drug Screen?

Picture a job candidate sitting in a waiting room after a promising interview. The paperwork is finished, the conversation went well, and the next step is a drug screen. They may wonder whether a prescription medication will show up, whether cannabis is included, or what "five-panel" actually means. This is a hypothetical but common scenario, and employers face a similar question when building a screening process: does one standard panel cover everything they need, and is a workplace test the same as a federally regulated one?

A 5-panel drug screen is designed to look for five major drug categories: marijuana (THC), cocaine, amphetamines, opioids or opiates, and phencyclidine (PCP). The specific substances included and the testing process can vary by program, especially when Department of Transportation (DOT) rules apply.

The five drug categories in a 5-panel screen

A "panel" refers to a category of substances included in a drug test. A standard 5-panel screen generally includes the following groups.

1. Marijuana (THC)

This category looks for THC-related metabolites associated with marijuana use. A drug-testing policy should clearly state whether marijuana is part of the panel and how results will be handled, since expectations can differ by workplace and by state.

2. Cocaine

The cocaine panel looks for metabolites associated with cocaine use. A screening result that comes back non-negative typically moves into a confirmation and review process rather than being treated as final on its own.

3. Amphetamines

In DOT-regulated testing, confirmatory testing for this category includes amphetamine, methamphetamine, MDMA, and MDA, according to the DOT's 5 Panel Notice. Not every positive screening result has the same explanation. Certain medications can be relevant during review, which is one reason employers and test participants should follow documented procedures rather than assume the meaning of an initial result.

4. Opioids or opiates

This is the category where DOT and non-DOT testing differ the most. A basic, non-DOT 5-panel test traditionally screens for the older "opiates" group, primarily codeine and morphine, sometimes with heroin's metabolite 6-AM.

DOT testing goes further. Under DOT rules, the opioid portion includes codeine, morphine, 6-AM, hydrocodone, hydromorphone, oxycodone, and oxymorphone. The DOT changed the category label from "opiates" to "opioids" specifically to reflect this expanded list, according to its 5 Panel Notice. That means a job candidate who has only heard of "opiate" testing could be surprised that a DOT-regulated employer also screens for common prescription painkillers like oxycodone and hydrocodone, which a basic non-DOT panel might not include unless the employer specifically orders it.

5. Phencyclidine (PCP)

PCP is the fifth category in a standard 5-panel test. It's included as part of the defined testing panel, not as a stand-in for testing every possible substance.

A 5-panel test does not test for every drug

The word "five" matters. A 5-panel test has a defined scope and should not be treated as a universal drug screen. A basic 5-panel test may not include substances such as benzodiazepines, barbiturates, methadone, fentanyl, synthetic drugs, alcohol, or other prescription medications outside the ordered panel.

Employers sometimes request broader testing based on the role, company policy, or a specific regulatory requirement. The test ordered should match the written policy and the organization's actual needs. Calling a test "comprehensive" without specifying what it covers can create confusion for both hiring teams and candidates.

DOT and non-DOT 5-panel testing are not always identical

DOT-regulated employers must follow federal testing requirements. While the test is commonly called a 5-panel, the DOT's required analytes are specific, including the amphetamine-type substances and expanded opioid list described above.

For a non-DOT employer, a "5-panel" label describes the five broad categories but doesn't automatically tell you every analyte, cutoff level, specimen type, or follow-up procedure involved. Before implementing a program, it helps to confirm exactly which panel is being ordered, whether the role is subject to DOT requirements, and what happens after a non-negative result. Those answers should be documented in policy rather than left to informal interpretation.

What a result can and cannot tell you

A drug screen looks for evidence of specified substances or their metabolites in a specimen. It is not, by itself, a complete picture of a person's health, work performance, or current impairment.

That distinction matters in workplace settings. A screening result is part of a process, not a substitute for a clearly written policy and careful review. Employers should avoid treating a 5-panel test as proof of impairment on the job. For test participants, the most useful step is reading the testing notice and following the appropriate review process rather than relying on general online lists, since exact panels and procedures vary between programs.

How employers can use a 5-panel screen responsibly

A 5-panel test can be a practical starting point for a screening program when an organization wants the five common categories without ordering an expanded panel. Policies should explain who is subject to testing, which panel is used, whether DOT requirements apply, how results are reviewed, and what steps follow a verified result. Clear communication helps candidates understand what's being requested and helps managers apply the policy consistently.

For organizations managing these programs, TCWGlobal offers expertise in implementing and managing 5-panel drug screening programs, helping employers align with current regulatory standards.

The bottom line

A 5-panel drug screen typically tests for marijuana (THC), cocaine, amphetamines, opioids or opiates, and PCP. The broad categories are consistent, but the exact substances covered within each one can vary, particularly in the opioid category, where DOT testing includes hydrocodone and oxycodone alongside traditional opiates like codeine and morphine.

Whether you're preparing for a test or building a workplace policy, ask for the exact panel details. Knowing what's included, how results are reviewed, and whether federal requirements apply is more useful than relying on the "5-panel" label alone.

Informational note: This article is provided for general informational purposes only and is not legal advice. It does not represent the advice or opinion of the website or organization on which it appears.