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Amphetmecmcnt

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

A test that checks a newborn's first stool (meconium) to see if the baby was exposed to amphetamine drugs during pregnancy.

Quick summary

{"Detects amphetamine exposure in the later stages of pregnancy","Uses the baby's first stool (meconium) for testing","Helps identify infants who may need special care","Can detect drug exposure from about 20 weeks of pregnancy up to birth","Important for getting early support and treatment for the baby"}

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

Key facts at a glance

LOINC
26959-7
Short code
Amphet Mec-mCnt
Synonyms
Amphet Mec-mCnt
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 Amphetamine test in Meconium is a screening test performed on newborns. It checks the baby's first stool, called meconium, to see if the baby was exposed to amphetamine drugs while in the womb. Meconium starts to form during the second and third trimesters of pregnancy, so this test can detect drug exposure that occurred in the later months of pregnancy.

How is the sample collected?

The sample is collected from the baby's first stool, which is usually passed within the first 1-3 days after birth. Healthcare providers collect a small amount of meconium and send it to a laboratory for testing. This is a simple and safe procedure for the newborn.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Why is this test done on my baby?
This test is done to find out if your baby was exposed to amphetamine drugs during pregnancy. If the mother used amphetamines in the later months of pregnancy, the drugs can pass to the baby and be stored in the meconium. Knowing about this exposure helps healthcare providers give your baby the best possible care.
Is the test safe for my baby?
Yes, this test is completely safe. It uses the baby's naturally passed first stool (meconium), which is already being eliminated by the baby. No blood draw or invasive procedure is needed.
What if the test is positive?
If the test is positive, it means your baby was exposed to amphetamines during pregnancy. The healthcare team will monitor your baby closely for any signs of withdrawal or other health concerns. They will provide appropriate care and support to help your baby thrive.
How long does it take to get results?
Results are typically available within a few days to a week, depending on the laboratory. Your healthcare provider will discuss the results with you.
  1. 1
    March of Dimes - Substance use during pregnancySource
  2. 2
    American College of Obstetricians and Gynecologists - Alcohol and DrugsSource
  3. 3
    National Institute on Drug Abuse - Substance Use While PregnantSource

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