Amphetamine Screen (Urine)
Does this test have other names?
Drug test, AMP, toxicology urine screen
What is this test?
This test looks for amphetamine in your urine. Amphetamine is a drug that stimulates
your central nervous system. It can show up in your urine long after you've taken
it. Amphetamines include methamphetamine (meth) and phentermine.
Amphetamine is a commonly used street drug. It makes users feel very alert and have
lots of energy. Stimulants like amphetamine and methamphetamine can also make the
user feel very happy. But they can also make users feel very agitated and have delusions
and hallucinations. Users feel aggressive and paranoid. They may be violent. Abusing
these drugs can also cause other serious health problems. These include stroke, heart
disease, convulsions, and severe tooth decay.
Amphetamine also has uses for health. Doctors sometimes prescribe the drug in small
doses for people with attention-deficit/hyperactivity disorder. Doctors also sometimes
give the drug to treat depression, obesity, and narcolepsy. Narcolepsy is a sleep
disorder marked by falling into a sudden deep sleep in places or at times when you
Why do I need this test?
Amphetamine can be dangerous to your health if you take too much. If you have been
prescribed this drug, your health care provider may use this test to make sure you
are taking your dose. An ER doctor may also order a blood or urine screen for methamphetamine
if you come to the ER with signs of a drug overdose. Methamphetamine changes to amphetamine
in the body. Signs of drug overdose include:
Even if you do not use amphetamines, you may need this test to get a job. If you are
a parolee or someone being treated for drug use disorder, you may also need this test
to show that you are not using drugs.
Companies often use urine tests to screen new employees for drugs, including amphetamine.
Urine tests cost less than blood tests. But they can be a problem because people have
found ways to cheat the test and appear drug free. Cheating usually involves adding
something to the urine sample to change the test results.
Some testers watch during the test to prevent cheating. Having someone watch you while
you give a urine sample can be embarrassing.
What other tests might I have along with this test?
You may also have a blood test to screen for drugs such as amphetamine. Amphetamine
can even be found in a strand of your hair. But this test is not considered to work
as well as a blood or urine test.
If you have injected amphetamines or other drugs, your doctor may test you for viruses
that commonly affect drug users. These might be HIV or hepatitis B or C.
If you have signs of a methamphetamine overdose, a doctor may also order a fingerstick
blood sugar test, acetaminophen test, and ECG. This is to rule out other health emergencies
or to monitor your condition. Health care providers may also order tests to check
your electrolyte balance and the health of your kidneys and liver.
What do my test results mean?
Many things may affect your lab test results. These include the method each lab uses
to do the test. Even if your test results are different from the normal value, you
may not have a problem. To learn what the results mean for you, talk with your health
A positive result means you most likely have used this drug in the last 1 to 4 days.
If you take amphetamine often, it may show up in your urine for up to a week after
Results only show that amphetamine was in your system at the time of the test. A positive
test result should be confirmed by a lab. Doctors diagnose amphetamine use disorder
only after a physical exam. This includes taking your personal history and talking
with you. If you have a problem with amphetamine use, your doctor can suggest treatment
for addiction, drug use disorder, or depression.
How is this test done?
This test requires a urine sample to be tested in a lab.
Does this test pose any risks?
This test poses no known risk.
The results of your test may affect your ability to get a driver's license or a job,
join the military, or play certain sports.
What might affect my test results?
In some cases, it's possible to get a positive test result even if you do not take
amphetamines. This is called a false positive. Test results may come back positive
if you have taken certain antihistamines, nasal inhalers, or cold medicines. You may
also get a false positive if you take certain medicines for depression. These include
tricyclic medicines, quetiapine, and bupropion. Talk with your health care provider
about whether the prescription and over-the-counter drugs you take could cause a false
positive test result.
How do I get ready for this test?
You do not need to prepare for this test.