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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 metabolites in your urine over a 24-hour period. It helps assess recent cocaine use.

Quick summary

["This test helps track recent cocaine exposure by measuring its breakdown products in urine."]

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

Key facts at a glance

LOINC
27204-7
Short code
Cocaine Vitf-mCnc
Synonyms
Cocaine Vitf-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

Why This Test Is Done

Your healthcare provider may order this test to evaluate recent cocaine use, monitor treatment progress, or screen for substance use disorders. It’s often used in medical, legal, or workplace settings where detecting recent drug exposure is important.

What to Expect Before the Test

No special preparation is needed. You’ll collect a 24-hour urine sample starting after your first morning urine void and ending just before your next morning urine void. Store the sample at room temperature until you deliver it to the lab.

What the Test Results Mean

Results above the reference range typically indicate recent cocaine use. However, false positives can occur due to other drugs or certain medications. Your provider will interpret results in the context of your symptoms, medical history, and other tests.

Common Causes of Abnormal Results

High levels may be due to recent cocaine use, but they can also result from exposure to other drugs, certain medications, or environmental factors. Chronic use may lead to lower levels due to metabolic changes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Urine Cocaine Mass (24h)

Frequently asked questions

What questions might you have?
This test is primarily used to detect recent cocaine exposure and is not a definitive measure of long-term use. It can be influenced by factors like hydration status, diet, and other substances.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Follow-up with your healthcare provider to discuss findings.
Can I drink alcohol before this test?
Alcohol does not interfere with this test, but excessive fluid intake may dilute urine and affect results. Stick to your usual hydration unless advised otherwise.
  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