Skip to content

Ibuprofen Concentration in Serum or Plasma

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

This test measures the amount of ibuprofen, a common pain reliever and anti-inflammatory medication, in your blood.

Quick summary

["Knowing your ibuprofen level helps doctors monitor your dose and ensure it’s working safely."]

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

Key facts at a glance

LOINC
73009-3
Short code
Ibuprofen (neut) IgM SerPl Ql FC
Synonyms
Ibuprofen (neut) IgM SerPl Ql FC
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
flow-cytometry
CPT
82784
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 ibuprofen for pain or inflammation and want to check how much is in your blood. It can also be used to assess liver function indirectly, as ibuprofen is processed by the liver.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually from a vein in your arm. If you’re on a low-sodium diet or have certain conditions, your doctor may advise adjustments.

What the Results Mean

Results help determine if your dose is appropriate. High levels may indicate overuse or poor metabolism, while low levels might suggest insufficient dosing. Your doctor will interpret these results in the context of your overall health.

Common Reasons for Monitoring

Doctors monitor ibuprofen levels in cases of kidney disease, liver problems, or if you’re taking other medications that interact with ibuprofen. It’s also used in research or specialized cases where precise dosing is critical.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Ibuprofen Level

Frequently asked questions

What causes ibuprofen levels to be checked?
Your doctor may check ibuprofen levels if you’re experiencing symptoms like nausea, dizziness, or unusual fatigue, which could signal an overdose or improper metabolism. It’s also used in certain clinical settings to guide treatment adjustments.
How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on your lab’s processing time. Follow-up with your doctor to discuss the findings.
Can ibuprofen levels be affected by diet or other medications?
Yes, diet (e.g., high-fat foods) and other medications (like aspirin or blood thinners) can influence ibuprofen absorption or metabolism. Always inform your doctor about all medications and supplements you take.
  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