Amphetamine Screen (Blood)
Does this test have other names?
Amphetamine concentrations screen (blood), amphetamine screen (blood)
What is this test?
This test measures the amount of a drug called amphetamine in your blood. This drug
is a central nervous system stimulant. This group of drugs also includes methamphetamine
(meth). The test is most often used to screen for drug use. It's often required by
the court system and some workplaces. If you show symptoms of an amphetamine overdose,
such as severe agitation and psychosis, a healthcare provider may order this test.
Amphetamine is a commonly used illegal drug that overstimulates the central nervous
system. It makes users feel abnormally alert, energetic, and productive. Stimulants
like amphetamine and meth can also cause euphoria, overwhelming agitation, delusions,
and hallucinations. Feelings of aggression and paranoia can make people more prone
to violence. Abusing these drugs can also cause other serious health problems. These
include stroke, heart disease, convulsions, and severe tooth decay.
Amphetamine also has medical uses. Healthcare providers sometimes prescribe it in
small doses for patients with attention-deficit disorder (ADD) and attention-deficit/hyperactivity
disorder (ADHD). It's also sometimes used to treat a sleep disorder called narcolepsy.
People with this disorder can fall into a sudden deep sleep in inappropriate places
Why do I need this test?
Amphetamine can be dangerous to your health if you take too much. If you've been prescribed
this drug, your healthcare provider may use this test to make sure you're getting
the correct, safe dose.
If you come to the ER with signs of a drug overdose, you may also have a blood or
urine screen for meth, which changes to amphetamine in the body. Signs of an overdose
Even if you don't use amphetamines, your workplace may require you to have the test
as a condition of employment. If you are a parolee or someone being treated for drug
use disorder, you may need to take this test to show that you aren't currently abusing
What other tests might I have along with this test?
You might also need a urine test to screen for amphetamine. Or a blood test to check
for other drugs such as marijuana and cocaine.
If you have signs of a methamphetamine overdose, a healthcare provider may also order
other tests. These can include a fingerstick blood sugar test, an acetaminophen test,
and an electrocardiogram (ECG). This is done to rule out other health emergencies
or monitor your condition. 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 healthcare
A test showing small amphetamine concentrations in your body is not always cause for
alarm. On the other hand, large amounts of the drug in your system can be dangerous
or even deadly.
The results of this test only show the amount of amphetamine in your system at the
time of the test. Providers diagnose amphetamine use only after a physical exam. This
exam includes taking your personal history and talking with you. If you have a problem
with amphetamine use, your provider can suggest treatment for addiction, drug use,
How is this test done?
The test requires a blood sample. This is drawn through a needle from a vein in your
Does this test pose any risks?
Taking a blood sample with a needle carries risks that include bleeding, infection,
bruising, or a dizzy feeling. When the needle pricks your arm, you may have a slight
stinging feeling or pain. Afterward, the site may be slightly sore.
What might affect my test results?
Although blood tests for amphetamines cost more than urine tests, they are the more
accurate testing method. It's possible to alter a urine test if a tester is not present
when the sample is taken.
How do I get ready for this test?
You don't need to prepare for this test.