Amphetaminessalqlscn

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

This test detects the presence of amphetamine-type stimulant drugs in your saliva, commonly used for workplace drug testing or medical evaluation.

Quick summary

{"Detects amphetamine and methamphetamine in oral fluid","Non-invasive sample collection","Positive result requires confirmation testing","Can detect recent drug use within 24-72 hours"}

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

Key facts at a glance

LOINC: 40799-9
Short code: Amphetamines Sal Ql Scn
Synonyms: Amphetamines Sal Ql Scn
Category: chemistry
Sample: serum
Container: Red-top tube (SST)
Units: N/A
Fasting: false
Population: adult
Sex: all
Age range: 18–65 years
Method: screen
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

What is this test?

The Amphetamines Saliva Screen test is a preliminary drug test that checks for the presence of amphetamine-type stimulants in your oral fluid (saliva). This includes legal prescription medications (such as those used to treat ADHD like Adderall or Ritalin) as well as illegal drugs like methamphetamine.

How is the sample collected?

A healthcare professional will collect a saliva sample by placing a special collection device in your mouth, typically under your tongue or along your cheek. The process is quick, painless, and does not require needles. You may be asked to avoid eating, drinking, or smoking for a certain period before sample collection.

What do the results mean?

A 'Negative' result means no amphetamines were detected at the time of testing. A 'Positive' result indicates that amphetamines were detected in your saliva. However, because this is a screening test, a positive result must be confirmed with a more specific laboratory test (like GC-MS or LC-MS/MS) before any final conclusions are drawn.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long after use can amphetamines be detected in saliva?

Amphetamines can typically be detected in saliva for 24-72 hours after use, though this varies depending on the specific drug, dosage, and individual metabolism.

Will a positive result show if I have a valid prescription?

This test can detect amphetamines regardless of whether you have a prescription. Always inform the testing facility and your healthcare provider about any prescription medications you are taking.

Can food or drinks affect the test results?

Certain foods, beverages, and mouthwashes may potentially interfere with the test. Follow any pre-test instructions provided by your healthcare provider carefully.

Is a positive screening test considered definitive proof of drug use?

No. A positive screening test is not considered definitive. All positive results require confirmation with a more accurate confirmatory test before any decisions are made.

Sources

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

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