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Cocaine mass concentration in urine (24-hour collection)

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

This test measures the total amount of cocaine and its active metabolite (benzoic acid) found in your urine over a 24-hour period. It helps detect recent cocaine use.

Quick summary

["Assesses recent cocaine exposure through urine collection over a full day."]

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

Key facts at a glance

LOINC
26956-3
Short code
Cocaine Mec-mCnt
Synonyms
Cocaine 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

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms of cocaine use, such as rapid heartbeat, anxiety, or trouble sleeping. It can also be used during treatment to monitor progress or screen for substance use in certain settings like workplaces or legal cases.

What to Expect Before the Test

You’ll need to collect all urine produced in a 24-hour period in a special container. Drink plenty of fluids to help flush out the substance. Avoid using cocaine or related products during this time.

What Happens During the Test

After collecting the urine, it’s sent to a lab for analysis. The lab measures the combined levels of cocaine and its metabolite to determine exposure.

What the Results Mean

Results above normal levels indicate recent cocaine use. However, interpretation depends on clinical context, such as symptoms or treatment goals. Your provider will discuss these results with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

24-Hour Urine Cocaine Test

Frequently asked questions

What questions might you have?
This test is primarily used for screening or monitoring, not for diagnosing acute intoxication. False positives can occur if you’ve used other substances or taken certain medications. Always discuss results with your healthcare provider.
How long do results take?
Results are typically available within 1–3 business days, depending on lab processing times. Your provider will contact you once they’re ready.
Can I drink alcohol before this test?
Yes, but avoid cocaine or related products during the 24-hour collection period. Alcohol is generally allowed unless advised otherwise by your provider.
  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