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Understanding Your Medical Test: What It Is, How It Is Done, and What the Results Mean

Published: August 9, 2026Updated: August 16, 2026

This test detects amphetamine drugs in your saliva to check for recent use of stimulants.

Quick summary

{"Detects amphetamine and methamphetamine in saliva","Used for drug screening and monitoring treatment compliance","Results can indicate recent drug use within 1-3 days","May be used in workplace, clinical, or legal settings","A positive result may require further confirmatory testing"}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
72758-6
Short code
Amphet Sal Cfm-mCnc
Synonyms
Amphet Sal Cfm-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

A medical test is a procedure that helps your doctor evaluate how your body is working, look for signs of illness, or confirm a diagnosis. Depending on the type of test ordered, it may involve providing a sample of blood, urine, or other tissue, or it may use imaging technology that allows your care team to look inside your body without surgery.

The saliva amphetamine test is a laboratory analysis that detects the presence of amphetamine and related stimulant drugs in your oral fluid (saliva). This confirmatory test uses specialized methods to accurately identify these substances. Amphetamines are stimulant drugs that affect the central nervous system and include both prescription medications (like those used for ADHD) and illegal drugs (such as methamphetamine).

The way your test is performed depends on what your doctor has ordered. Many tests require a small sample of blood drawn from a vein in your arm, while others may need a urine sample, a throat swab, or an imaging scan. A trained technician, nurse, or other healthcare professional will guide you through each step, and most procedures take only a few minutes to complete.

A healthcare professional will collect a saliva sample by placing a special collection device in your mouth to absorb oral fluid. The process is simple, non-invasive, and typically takes just a few minutes. The sample is then sent to a laboratory where it undergoes confirmatory testing using mass spectrometry or other advanced methods to accurately identify and measure amphetamine substances.

Your doctor may order this test to help diagnose a medical condition, monitor an ongoing illness, check how well a treatment is working, or screen for health problems before symptoms appear. The results provide important information that helps your care team make informed decisions about your diagnosis, your treatment options, and your overall plan of care.

This test may be ordered for various reasons: workplace drug screening programs, monitoring patients on prescription amphetamine medications (such as Adderall or Ritalin for ADHD), compliance verification for substance abuse treatment programs, legal or forensic investigations, or when a healthcare provider suspects stimulant drug use. It helps determine if someone has used amphetamine-type drugs within the past few days.

Your results will show whether your values fall within the normal range established for this test. Normal results usually mean there are no signs of the condition being checked, while abnormal results may point to an infection, inflammation, or another health issue that needs a closer look. Always review your results with your doctor, who can explain what they mean in your situation and whether further testing or treatment is needed.

Results are typically reported as either positive (present) or negative (not detected). A positive result indicates that amphetamine or methamphetamine was found in your saliva at the time of testing. It's important to note that certain prescription medications, over-the-counter drugs, or foods may potentially cause false-positive results. Confirmatory testing (like this test provides) helps ensure accuracy. Your healthcare provider will interpret your results in the context of your medical history and current medications.

Most medical tests are safe and require very little preparation. Some blood tests ask you to fast for 8 to 12 hours beforehand, and you should tell your care team about any medications, vitamins, or supplements you take. Risks are usually minimal and may include slight bruising or soreness where a needle was inserted. Your provider will give you specific instructions to follow before your appointment.

This test has minimal risks and requires no special preparation. You should inform your healthcare provider about all prescription medications, over-the-counter drugs, and supplements you are taking, as some may affect results. Avoid eating, drinking, smoking, or chewing gum for at least 10-15 minutes before sample collection, as these activities may interfere with test accuracy. The collection process is generally comfortable and quick.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings2

Frequently asked questions

How long does amphetamine stay detectable in saliva?
Amphetamines are typically detectable in saliva for 1-3 days after use, depending on the dose, frequency of use, individual metabolism, and the specific drug. This makes saliva testing useful for detecting recent use rather than long-term history.
Can a positive result occur from prescription ADHD medications?
Yes. If you have a valid prescription for amphetamine medications (such as Adderall, Dexedrine, or Vyvanse for ADHD), you should inform the testing facility beforehand. A positive result may be expected and does not necessarily indicate misuse. Bring your prescription information to the appointment.
What is the difference between screening and confirmatory testing?
Initial screening tests are quick and inexpensive but may have false positives. Confirmatory tests (like this one) use more advanced laboratory methods to definitively identify specific drugs, providing highly accurate results that can be used for legal or clinical decisions.
Can foods or over-the-counter medications cause a positive result?
Some cold medications, diet pills, or herbal supplements containing certain ingredients may potentially cause false-positive results in screening tests. However, confirmatory testing is more specific and less likely to be affected. Always disclose all medications and supplements to your healthcare provider.
How long will it take to get results?
Since this is a confirmatory test sent to a specialized laboratory, results typically take 2-5 business days, depending on the laboratory's processing time and any additional confirmatory steps needed.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy