Skip to content

Amphetaminesmecmcnc

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

This test detects amphetamine exposure in newborns by analyzing the baby's first stool (meconium).

Quick summary

{"The test checks if a newborn was exposed to amphetamine drugs during pregnancy","Meconium can detect drug exposure from about the second trimester onwards","A positive result helps healthcare providers plan appropriate care for the baby","The test is typically done shortly after birth if drug exposure is suspected","Results help identify infants who may need special monitoring or treatment"}

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

Key facts at a glance

LOINC
8143-0
Short code
Amphetamines Mec-mCnc
Synonyms
Amphetamines Mec-mCnc
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 laboratory test that detects whether a newborn baby has been exposed to amphetamine-type stimulant drugs during pregnancy. Amphetamines include illegal drugs like methamphetamine ('meth') and prescription stimulants used for ADHD or other conditions.

How is the test performed?

A small sample of meconium—the baby's first stool that passes within the first few days of life—is collected and sent to a laboratory. The sample is then analyzed using specialized techniques to detect the presence of amphetamines or their metabolites. Meconium begins to form around the second trimester and can store drug metabolites for several months, making it an excellent indicator of prenatal drug exposure.

Why is this test important?

If a mother uses amphetamines during pregnancy, these substances can cross the placenta and affect the developing fetus. Babies exposed to amphetamines before birth may experience withdrawal symptoms, developmental delays, or other health issues. This test helps healthcare providers identify exposed infants early so they can receive appropriate care and monitoring.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Does a positive test mean the mother is currently using drugs?
No, a positive test indicates past exposure during pregnancy but does not necessarily indicate current drug use. The detection window in meconium reflects exposure during the latter two trimesters of pregnancy.
Is this test mandatory?
This test is typically ordered when there is clinical suspicion of drug exposure, such as when the mother has a known history of drug use, displays signs of substance use during pregnancy, or when the baby shows symptoms that could be related to drug exposure. It is not a routine screening test for all newborns.
Will the results be shared with law enforcement?
Test results are part of the baby's medical record and are protected by patient privacy laws. Healthcare providers use these results primarily for medical care purposes. Reporting practices vary by jurisdiction, and the primary goal is to ensure appropriate medical care for the infant.
What happens if the test is positive?
If the test is positive, the healthcare team will evaluate the baby for signs of neonatal abstinence syndrome (NAS) or other effects of prenatal drug exposure. The baby may need extended monitoring, specialized care, or referral to developmental specialists. The care team will also provide support and resources to the family.
  1. 1
    March of Dimes - Substance abuse during pregnancySource
  2. 2
    American College of Obstetricians and Gynecologists - Substance Abuse ScreeningSource
  3. 3
    National Institute on Drug Abuse - Prenatal EffectsSource

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