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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 doctors assess your drug levels and ensure safe dosing.

Quick summary

["This test helps monitor your tramadol levels for safety and effectiveness."]

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

Key facts at a glance

LOINC
73973-0
Short code
O-nortramadol Bld-mCnc
Synonyms
O-nortramadol Bld-mCnc
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test if you’re taking tramadol for pain management, especially if you’re on a high dose, have kidney issues, or are taking other medications that interact with opioids. It helps prevent overdose risks by checking if your blood levels are within safe ranges.

What Does the Test Involve?

A blood sample is taken from a vein, usually in your arm. The sample is then analyzed to determine the exact amount of tramadol present in your bloodstream.

What Should You Expect Before the Test?

No special preparation is needed, but inform your doctor about all medications, supplements, or recent illnesses, including alcohol use. Avoid eating or drinking anything (except water) for at least 8 hours before the test if instructed.

What Are Common Results?

Results are typically reported in micrograms per milliliter (µg/mL) or nanograms per milliliter (ng/mL). Your doctor will interpret the results based on your medical history and current medications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High tramadol levels may indicate overdose risk, especially if combined with other central nervous system depressants like alcohol or benzodiazepines. Low levels might suggest insufficient pain control or improper dosing. Regular monitoring helps balance pain relief with safety, particularly in patients with kidney problems or those taking other medications that affect tramadol metabolism.

Short name

Tramadol Blood Level

Frequently asked questions

How long does it take to get the results of this test?
Results are usually available within 1 to 3 business days, depending on your lab’s processing time. Your doctor will contact you once they have the results.
Can I eat or drink before this test?
No, avoid eating or drinking anything (except water) for at least 8 hours before the test unless your doctor specifies otherwise. Follow their instructions to ensure accurate results.
Is this test painful?
The blood draw itself may cause a slight pinch or discomfort, but it’s usually over quickly. Most people feel minimal pain afterward. If you’re anxious, ask your doctor about numbing cream or other ways to ease the process.
  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