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Opioid (Tramadol) Mass Concentration in Whole Blood

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

This test measures the amount of tramadol, a pain medication, in your blood. It helps determine your current drug level.

Quick summary

["Understanding your tramadol blood level helps your doctor adjust your dose for safe and effective pain relief."]

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

Key facts at a glance

LOINC
82974-7
Short code
O-nortramadol SerPlBld Cfm-mCnc
Synonyms
O-nortramadol SerPlBld Cfm-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
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 doctor may order this test if you’re taking tramadol for chronic pain, have been prescribed a higher dose, or are experiencing side effects like dizziness, confusion, or slow breathing. It may also be used to monitor overdose risk or assess compliance with treatment.

What to Expect Before the Test

No special preparation is needed. You’ll likely have a small needle inserted into your arm or vein to draw a blood sample. If you’re on blood thinners, let your doctor know before the test.

What the Results Mean

Results show the concentration of tramadol in your blood. High levels may indicate overdose risk, while low levels could mean your dose isn’t working as intended. Your doctor will interpret results in the context of your medical history and symptoms.

Common Side Effects of Tramadol

Tramadol can cause side effects like drowsiness, nausea, constipation, or dizziness. If you experience severe symptoms like slow breathing, seek medical help immediately.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Monitoring tramadol levels helps prevent toxicity, optimize pain management, and reduce risks of dependence or overdose. It’s particularly important for patients with kidney issues or those taking other medications that interact with tramadol.

Short name

Tramadol Blood Level

Frequently asked questions

How long does it take to get tramadol blood test results?
Results are typically available within 1–3 business days, depending on your lab and insurance. Your doctor will contact you once they’re ready.
Can I drink alcohol before this test?
Avoid alcohol for 24 hours before the test, as it may affect tramadol metabolism and interfere with accurate results.
Will this test affect my ability to drive?
Tramadol can impair judgment and coordination. Avoid driving or operating machinery until you know how you react to the medication and your doctor confirms it’s safe.
  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