Note: LabX runs a 12-panel screen — urine $89 or fingerstick blood $99 — and a 10-panel that is the same screen without PCP and alcohol. We have never run a 14-panel; where you see one referenced elsewhere, this is what we actually test for.

When employers set up a screening program, one of the first questions is how wide to cast the net. LabX runs two: a 12-panel and a 10-panel. They are not different tests — the 10-panel is the 12-panel without PCP and alcohol. Bigger is not automatically better, and the honest answer for most employers is that the difference between the two is smaller than the marketing around panel numbers suggests.

What the 12-panel covers

The 12-panel is our full workplace screen. On a urine specimen it looks for:

Amphetamines — amphetamine and methamphetamine
Cocaine
Opiates — morphine and codeine
Oxycodone
6-MAM — the marker the body only makes after heroin
Fentanyl
Benzodiazepines
Barbiturates
PCP
Alcohol — ETOH in urine, ETS in blood
Marijuana (THC) — urine only
MDMA — blood only, in place of THC

A fingerstick blood specimen runs the same twelve with one substitution: MDMA in place of THC, and alcohol reported as ETS rather than ETOH. Blood is the more stable specimen and the harder one to tamper with; urine has the longer detection windows. That choice matters more in practice than the panel number does.

What the 10-panel leaves off

The 10-panel is the same screen without PCP and alcohol. Everything else is identical, including fentanyl — which is worth saying plainly, because fentanyl is absent from a great many panels sold as 10-panels elsewhere. If your program tests alcohol separately by breath, or PCP is simply not part of your risk picture, the 10-panel is the cheaper kit for the same drug coverage.

When the wider screen is worth it

Choose the 12-panel when:

Your workforce operates heavy machinery, vehicles, or other safety-sensitive equipment, where alcohol is part of what you are actually screening for.
You want alcohol captured on the same specimen rather than run as a separate breath test with its own chain of custody.
Post-incident investigations have surfaced substances your current panel does not detect.

When the 10-panel is the right call

For many general-industry employers the 10-panel is entirely sufficient. If alcohol is handled by a separate breath programme and your roles are lower-risk, the two extra classes add cost without changing outcomes. The best screen is the one you can run consistently and act on confidently — not the longest list you can buy.

There is also a practical argument for not over-testing. Every extra class you screen for is another potential presumptive positive to investigate, another legitimate prescription to review, and another few dollars per test multiplied across your whole workforce. Right-sizing the panel is as much about respecting your team's time as it is about cost.

When neither is wide enough

Some substances are on no immunoassay screen at any panel width — methadone, buprenorphine, tramadol, ketamine, hydrocodone, gabapentin, the antidepressants and the muscle relaxants. If those are your risk, the answer is not a bigger screen, it is a different method: our full toxicology screen measures 78 compounds by LC-MS/MS and reports each one by name with a number. That is the right tool for pain management, behavioural health and monitoring programmes.

Do not forget confirmation and review

Whichever panel you choose, a screen produces presumptive results. Any non-negative should be confirmed by a laboratory method such as LC-MS/MS, and where prescriptions are involved, reviewed properly so a legitimate medication is not mistaken for misuse. Confirmation at LabX runs on every substance on the panel, not only the ones that flagged — which is what proves a clean result rather than simply not flagging one.

How to decide

Map your real risks, look at your incident and industry history, and match the panel to what you will actually act on. LabX Diagnostic Systems helps employers pick the right configuration and run it cleanly: you can open an employer account, order the panel you choose, and manage lab-confirmed results from your secure portal. Our testing overview breaks down what each panel detects.

The takeaway: the 10-panel is the reliable default; the 12-panel is the right choice when PCP and alcohol belong on the same specimen. If the substances you are worried about are prescription medications, neither screen is the answer — full toxicology is. Let LabX help you match the screen to your workforce.

10-Panel vs 12-Panel: Which Employer Screen Do You Need?