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Cocaine Substance Concentration (Urinary)

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

This test measures the presence of cocaine or its metabolites in your urine to detect recent use.

Quick summary

["A simple urine test to check for cocaine use, often used in medical or workplace screenings."]

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

Key facts at a glance

LOINC
8195-0
Short code
Cocaine Usub Ql
Synonyms
Cocaine Usub Ql
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 heart rate, confusion, or if you’ve been exposed to substances. It can also be part of a routine screening, pre-employment check, or legal requirement.

What to Expect Before the Test

No special preparation is needed. You’ll provide a urine sample in a private area. Avoid drinking excessive water before testing, as it may dilute results.

What the Test Results Mean

Positive results indicate recent cocaine use, but they don’t confirm the exact amount or timing. False positives can occur with certain medications or other drugs.

Common Uses and Limitations

This test is commonly used for drug screening but isn’t definitive for diagnosing addiction or long-term exposure. It’s often used alongside other tests or clinical judgment.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urinary Cocaine Screen

Frequently asked questions

What does a positive result mean?
A positive result suggests recent cocaine exposure, but it doesn’t tell you how much was used or for how long. It may prompt further evaluation by your doctor, especially if you’re experiencing health concerns.
Can false positives happen?
Yes, false positives can occur due to other drugs, certain medications, or even environmental factors. Your doctor may order follow-up tests to clarify results.
How soon after use can the test detect cocaine?
Cocaine or its metabolites can be detected in urine for about 2–3 days after use, depending on individual metabolism. The test isn’t designed to detect long-term storage of the substance.
  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