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Cocaine metabolite screening (meconic acid)

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

This test measures levels of cocaine metabolites in your urine, helping detect recent cocaine use.

Quick summary

["This test helps track recent cocaine exposure and supports substance use assessment."]

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

Key facts at a glance

LOINC
109830-0
Short code
Cocaine Msmt Mec
Synonyms
Cocaine Msmt Mec
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

Why This Test Matters

Cocaine is metabolized in the body into detectable compounds, including meconic acid. This test identifies these metabolites to assess exposure, often used in substance use evaluations, workplace testing, or legal contexts.

What to Expect During Testing

You’ll provide a urine sample collected in a sterile container. The lab analyzes it for cocaine metabolites using a sensitive immunoassay method, which detects even small amounts.

Sample Collection and Preparation

Urine is the most common specimen for this test. Follow your healthcare provider’s instructions for proper collection—avoid contamination from personal hygiene products or medications.

Interpretation and Results

Results are qualitative (positive/negative) rather than quantitative. A positive result indicates recent cocaine use, but it does not specify timing or amount.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive results may prompt further evaluation, such as additional testing or counseling, especially if used in medical, legal, or occupational settings. False positives can occur with certain medications or conditions, so context matters.

Short name

Cocaine metabolite test

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
Can I take anything before the test?
Avoid using urine-contaminating products (e.g., deodorants, perfumes) and certain medications (e.g., some antibiotics, antacids) for 24 hours before testing.
Does this test detect other drugs?
No, this test specifically measures cocaine metabolites. Other drug screens would be needed for broader testing.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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