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Amphetaminesmecql

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

This test checks if a newborn baby has been exposed to amphetamine-type stimulant drugs while in the womb by testing the baby's first stool (meconium).

Quick summary

{"Detects prenatal exposure to amphetamine/methamphetamine in newborns","Uses meconium (baby's first stool) as the sample","Helps identify infants who may need special care for drug withdrawal","Important for early intervention and appropriate medical management","Results help healthcare providers plan necessary follow-up care"}

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

Key facts at a glance

LOINC
8144-8
Short code
Amphetamines Mec Ql
Synonyms
Amphetamines Mec Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 in Meconium test is a laboratory test that detects whether a newborn baby has been exposed to amphetamine-type stimulant drugs during pregnancy. These drugs include amphetamine and methamphetamine (commonly known as speed or crystal meth). The test analyzes the baby's first stool, called meconium, which accumulates in the intestines during the last few months of pregnancy.

How does it work?

When a pregnant person uses amphetamine-type drugs, these substances can cross the placenta and enter the baby's bloodstream. The drugs then accumulate in the baby's meconium as the fetal intestines develop. Unlike urine tests, which can only detect recent drug use, meconium testing can detect drug exposure that occurred during the second and third trimesters of pregnancy, providing a longer detection window.

Why is this test performed?

This test is typically performed shortly after birth when there is a concern about possible maternal drug use during pregnancy. It may be ordered if the mother has a history of drug use, if the baby shows signs of drug withdrawal, or as part of routine screening in certain healthcare settings. Early identification of drug exposure helps healthcare providers give the baby the appropriate care and monitoring they need.

What happens during the test?

The test requires a small sample of meconium, which is typically collected from the baby's diaper shortly after birth. The sample is then sent to a laboratory for analysis. The test looks for the presence of amphetamine and/or methamphetamine using specialized testing methods. Results are usually available within a few days.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Does a positive result mean the mother is currently using drugs?
No, a positive result indicates prenatal exposure during pregnancy but does not necessarily indicate current drug use. The test detects drug exposure that occurred weeks to months before birth. It is an important tool for providing appropriate care to the baby rather than for judging or legal purposes.
Will the baby need treatment if the test is positive?
Not all babies with positive results require medical treatment. Some may have minimal or no symptoms, while others may need close monitoring, supportive care, or medication for withdrawal symptoms. The healthcare team will assess the baby individually and provide appropriate care based on their condition.
Is this test mandatory?
Testing policies vary by location and healthcare facility. In many settings, testing is performed when there is clinical suspicion of prenatal drug exposure. Healthcare providers follow specific protocols and guidelines regarding testing, and they will discuss testing recommendations with parents as appropriate.
Can false positives occur?
While laboratory tests are designed to be accurate, false positives can occasionally occur due to certain medications or dietary factors. If the initial test is positive, confirmatory testing may be performed to verify the results. Healthcare providers will interpret results in the context of clinical findings and other information.
What should I do if my baby tests positive?
If your baby tests positive, your healthcare team will discuss the results with you and explain what this means for your baby's care. They will monitor your baby for any symptoms and provide appropriate treatment if needed. It's important to be honest with your healthcare providers so they can give your baby the best possible care. Remember, the goal is to help your baby thrive and to support your family.
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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