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Amphetaminesserplqlcfm

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

This test checks if amphetamines (stimulant drugs) are present in your blood sample.

Quick summary

{"Detects amphetamine-type drugs like methamphetamine or MDMA in blood","Used for drug abuse screening, workplace testing, or medical monitoring","Results require professional interpretation in clinical context","A positive result does not indicate impairment level","Confirmation testing ensures accurate results"}

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

Key facts at a glance

LOINC
8148-9
Short code
Amphetamines SerPl Ql Cfm
Synonyms
Amphetamines SerPl Ql Cfm
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

What is this test?

This test looks for amphetamines in your blood (serum or plasma). Amphetamines are stimulant drugs that include prescription medications (like ADHD treatments) and illegal substances (like methamphetamine or MDMA/ecstasy). This is a confirmatory test, meaning it provides highly accurate results to verify initial screening findings.

Why might I need this test?

Your healthcare provider may order this test for several reasons: workplace or pre-employment drug screening, monitoring for medication compliance, evaluating suspected drug intoxication, forensic or legal investigations, or as part of a comprehensive drug testing panel. It may also be used in emergency settings when someone shows symptoms of drug exposure.

How is the test done?

A healthcare professional will draw a blood sample from a vein in your arm. The sample is then sent to a laboratory where it undergoes confirmatory testing, typically using mass spectrometry methods. This confirms the presence and identifies specific types of amphetamines with high accuracy.

What do the results mean?

A negative result means no amphetamines were detected in your blood at the time of testing. A positive result indicates that amphetamines were found. However, results require medical interpretation—certain prescription medications may cause positive results, and timing of use affects detection. Your healthcare provider will explain what your specific results mean in your situation.

Are there any risks?

The risks are minimal and similar to routine blood tests, including slight bruising, soreness, or rarely, infection at the puncture site. Some people may feel lightheaded during or after the blood draw.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long do amphetamines stay in blood?
Amphetamines are typically detectable in blood for about 12-24 hours after use, though this varies based on the specific drug, dosage, individual metabolism, and frequency of use.
Can prescription medications cause a positive result?
Yes, certain prescription medications containing amphetamines (like ADHD medications: Adderall, Vyvanse) or related compounds can cause positive results. Always inform your healthcare provider about all medications you are taking.
Do I need to fast before this test?
No fasting is typically required for this blood test. Follow any specific instructions provided by your healthcare provider or testing facility.
Will this test tell me if I'm impaired?
No, this test detects the presence of drugs but does not measure impairment or intoxication level. The relationship between drug concentration and impairment varies greatly between individuals.
How long will it take to get results?
Confirmatory testing typically takes 2-5 days, as it requires specialized laboratory equipment and analysis. Your healthcare provider will inform you when results are available.
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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