A 4-panel drug test in Mesa, AZ is a urine drug screen that checks for cocaine, opiates, amphetamines, and PCP but does not test for marijuana (THC).
HOW IT WORKS:
Walk-in
15-Minute Lab Visit
Secure Same-Day
Results sent to you
Who Uses a Drug Test Without THC?
Since Arizona legalized recreational marijuana under Proposition 207, many people need a test that checks for hard drugs without flagging legal marijuana use:
-
Job seekers whose employer asked for a 4-panel
-
Parents who want to rule out cocaine, meth, or opioids
-
Recovery and sober living programs focused on hard drugs
-
Anyone who wants peace of mind
Some safety-sensitive and DOT jobs still require THC testing.
Why Mesa Trusts Quick Test Health Services®
-
No appointment needed. Walk in Monday through Friday
-
Affordable prices, posted up front. No surprise fees
-
Most visits take about 15 minutes
-
MRO review available when you need it
-
Results sent straight to you
Rapid or Lab-Based: Which 4-Panel Do I Need?
Both start with the same 15-minute walk-in visit. They answer different questions.
The rapid test is a yes-or-no screen. It's read on-site against a set cutoff and shows whether each drug is present, in about 15 minutes. That's what most pre-employment checks and personal tests need.
The lab-based test measures actual levels. Your sample goes to a certified laboratory that measures how much of each substance is present. Courts, monitoring programs, and some employers require it. Results are usually ready in 24 to 48 hours.
If a rapid result is ever non-negative, it can be sent to the lab for confirmation.
Should I Use an At-Home Drug Test or Get Tested at a Lab?
At-home tests give a preliminary answer, not a final one. Drugstore kits and lab rapid tests use the same basic technology, called an immunoassay, which reacts to molecules shaped like drug metabolites. Some legal substances are shaped similarly enough to set it off. Certain antibiotics, the blood pressure drug verapamil, and the medication quetiapine can all cause a false opiate result, and poppy seeds contain trace opiates. Amphetamine results are also less consistent on home kits.
That's why federal health guidance says any positive home result should be confirmed by a lab. Foods, drinks, supplements, and medications can all affect the outcome. Even the kits' own instructions describe results as preliminary.
Here's what you get at Quick Test that a home kit can't give you:
-
A trained collector, with a temperature check to confirm a valid sample
-
Proper paperwork, so employers, courts, and programs accept your result. Home tests aren't legally accepted
-
Lab confirmation available, which identifies the exact substance and rules out look-alikes
-
MRO review available, so a valid prescription doesn't count against you
-
Bottom line: a home kit is fine for private peace of mind.
When the result matters for a job, a court case, or a program, test with us.
Can a Prescription Cause a Positive Result?
Yes. Amphetamines can show up from ADHD medications, and opiates from prescription pain medication.
A non-negative result can be sent to the lab and reviewed by a medical review officer (MRO), a doctor who checks for a valid prescription before the result is finalized.
Common Questions
What does the 4-panel no-THC test screen for? Cocaine, opiates such as heroin and morphine, amphetamines including methamphetamine, and PCP. Marijuana is not included on this panel and will not appear on the result.
Do employers still test for weed in Arizona? Some do, and many no longer do. Arizona law allows employers to keep drug-free workplace policies, so each company sets its own rules. The 4-panel exists for those who test for hard drugs without testing for marijuana.
How Much Is a 4-Panel Drug Test? A rapid 4-panel drug test is $35 at Quick Test, with no visit fee added. Many labs charge $50 to $59 for the same test. Here, you walk in and have your results the same day.
Related Services