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Cocaine Ethylene Glycol Metabolite Concentration (Serum/Plasma)

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

This test measures levels of cocaine metabolites in your blood to detect recent cocaine use.

Quick summary

["Detects recent cocaine exposure through its breakdown products in your blood."]

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

Key facts at a glance

LOINC
31135-7
Short code
Cocaethylene Bifl-mCnc
Synonyms
Cocaethylene Bifl-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 if you have symptoms of cocaine use, such as rapid heart rate, confusion, or if you’ve been exposed to cocaine recently. It can also be part of a broader evaluation for substance use disorders or legal/medical investigations.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, typically drawn from your arm. If you’re taking certain medications or have a history of bleeding disorders, let your provider know beforehand.

What the Test Results Mean

Results show the concentration of cocaine metabolites in your blood. Elevated levels suggest recent cocaine use, but they don’t confirm the exact amount or duration. Interpretation depends on clinical context, such as symptoms or timeline of exposure.

Common Causes of Abnormal Results

High levels may indicate recent cocaine use, but they can also occur with other substances or medical conditions. For example, certain medications or liver disease might affect metabolite levels.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test helps healthcare providers assess exposure to cocaine, guide treatment decisions, or support legal or medical evaluations. It’s often used alongside other tests (like urine drug screens) for a complete picture.

Short name

Cocaine Metabolite Test

Frequently asked questions

Will this test show if I’ve used cocaine before?
No, this test measures recent use. Cocaine metabolites typically clear from the blood within hours to days, so it’s best for detecting exposure within a short timeframe (e.g., 24–48 hours).
Can I drink alcohol before this test?
Alcohol itself won’t interfere with the test, but it may affect your overall health or symptoms. If you’re unsure, ask your provider whether to avoid alcohol or other substances before testing.
How long will I have to wait for my results?
Results are usually available within 1–3 business days, depending on lab processing times. Your provider will discuss them with you during your follow-up visit.
  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