Serum/plasma concentration of atomoxetine (a selective norepinephrine reuptake inhibitor)
This test measures the amount of atomoxetine, a medication used to treat attention deficit hyperactivity disorder (ADHD) and depression, in your blood.
["This helps your healthcare provider check if your dose is working properly and adjust it if needed."]
Key facts at a glance
- LOINC
- 73514-2
- Short code
- Atomoxetine ind plt IgM SerPl Ql FC
- Synonyms
- Atomoxetine ind plt IgM SerPl Ql FC
- Category
- hematology
- 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 to monitor your response to atomoxetine, ensuring it’s at an effective level without causing too much of an effect. It can also help adjust your dose if you’re not feeling better or experiencing side effects.
What to Expect Before the Test
No special preparation is usually needed. You may have a small needle inserted into your arm or vein to draw blood. If you’re taking atomoxetine regularly, your blood will be collected at a consistent time each day for accuracy.
What the Results Mean
Results help your doctor determine if your dose is therapeutic (effective) or if adjustments are needed. Low levels may mean the medication isn’t working, while very high levels could signal overdose or improper metabolism.
Common Uses and Considerations
This test is most commonly used in patients on atomoxetine for ADHD or depression, especially if they’re not responding well or have side effects. It’s not a routine test but may be ordered periodically.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Monitoring atomoxetine levels is critical because it’s a medication that can be toxic at high concentrations. Low levels may indicate insufficient therapeutic effect, while elevated levels could signal toxicity, drug interactions, or improper metabolism (e.g., liver issues). Your doctor will use these results to optimize your treatment plan.
Short name
Atomoxetine Level
Frequently asked questions
When might I need this test?
How long will it take to get my results?
Can I eat or drink before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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