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Urine morphine concentration (mass concentration)

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

This test measures the amount of morphine present in your urine. It may be used to assess drug exposure, monitor treatment, or detect recent opioid use.

Quick summary

["This test helps track opioid use or metabolism in your urine."]

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

Key facts at a glance

LOINC
19602-2
Short code
Morphine Free Ur Ql Cfm
Synonyms
Morphine Free Ur Ql Cfm
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may order this test if you are taking opioids for pain management, recovering from opioid use, or if there is suspicion of opioid misuse. It can also be used in workplace drug screening or legal investigations.

What to Expect Before the Test

No special preparation is typically needed. You may be asked to provide a urine sample in a clean container, often collected at a lab or clinic. Follow any specific instructions your provider gives you.

What the Test Involves

A healthcare professional will collect a urine sample. The sample is then sent to a lab where it is analyzed using a sensitive detection method to measure morphine levels.

What the Results Mean

Results are usually reported in micrograms per milliliter (µg/mL) or another relevant unit. Interpretation depends on clinical context, such as your medical history, treatment plan, or reason for testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine morphine level

Frequently asked questions

What Does This Test Measure?
Morphine is an opioid pain reliever. This test measures its presence in urine, which can indicate recent opioid exposure, whether you are metabolizing the drug properly, or if there is potential for misuse.
How Might My Results Affect My Treatment?
If you are taking opioids, your results may help your doctor adjust your dosage or monitor your response to treatment. High levels might suggest improper metabolism or misuse, while low levels could indicate insufficient medication or early withdrawal.
What Are Common Reference Ranges?
There is no single standard reference range for morphine in urine, as levels vary widely based on factors like dose, metabolism, and time since last use. Your results will be compared to your individual clinical picture and needs.
  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