Benzodiazmecqlscn
This test checks if a newborn has been exposed to benzodiazepine medications before birth by testing the baby's first stool (meconium).
{"Detects prenatal exposure to benzodiazepine medications","Uses baby's first stool (meconium) as the sample","Can show drug exposure during late pregnancy","Helps identify babies who may need monitoring","Important for proper newborn care planning"}
Key facts at a glance
- LOINC
- 31081-3
- Short code
- Benzodiaz Mec Ql Scn
- Synonyms
- Benzodiaz Mec 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?
This test looks for benzodiazepine drugs in a newborn's meconium (the baby's first bowel movement). Benzodiazepines are prescription medications commonly used to treat anxiety, sleep problems, and seizures. Examples include diazepam (Valium), lorazepam (Ativan), and alprazolam (Xanax).
How is the test done?
A small sample of the baby's meconium is collected shortly after birth and sent to a laboratory for analysis. The test uses a screening method to detect the presence of benzodiazepine substances. Results are usually available within a few days.
Why is this test important?
If a mother took benzodiazepine medications during pregnancy, the drugs can cross the placenta and affect the unborn baby. Testing meconium is useful because it can detect drug exposure that occurred during the weeks before birth. This information helps healthcare providers give appropriate care to the newborn.
What do the results mean?
A positive result means benzodiazepine drugs were detected in the meconium, indicating the baby was exposed to these medications before birth. A negative result means no benzodiazepines were detected, though it cannot rule out all drug exposures. Your healthcare provider will discuss the results and any necessary follow-up care.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
Does a positive result mean my baby is in danger?
How long does benzodiazepine stay in meconium?
Will this test show all medications or drugs?
Is the test mandatory?
Sources
- 1
- 2
- 3
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.
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