Skip to content

Serum/plasma concentration of esomeprazole (a proton pump inhibitor)

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

This test measures the amount of esomeprazole, a medication used to reduce stomach acid, in your blood. It helps doctors check if your dose is working properly.

Quick summary

["This test helps monitor your medication levels and adjust treatment if needed."]

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

Key facts at a glance

LOINC
73390-7
Short code
Esomeprazole ind plt IgM SerPl Ql FC
Synonyms
Esomeprazole 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 Is This Test Done?

Your healthcare provider may order this test if you’re taking esomeprazole long-term, have unusual side effects, or if your symptoms don’t improve. It helps ensure the medication is at an effective level in your body.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. The process takes a few minutes, and you may feel a slight pinch.

What the Results Mean

Results aren’t provided as a single number range since esomeprazole levels vary based on dose, metabolism, and individual factors. Your provider will interpret the result in relation to your treatment goals and symptoms.

Common Reasons for Testing

Doctors may check esomeprazole levels if you’re experiencing side effects like nausea, fatigue, or if your stomach issues persist despite treatment. It can also help confirm whether your dose is sufficient to manage conditions like GERD or ulcers.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Esomeprazole Level

Frequently asked questions

How long does it take to get results from this test?
Results are typically available within 1–3 business days, depending on your lab. Your healthcare provider will contact you with the findings.
Can I take my esomeprazole before or after this test?
Yes, you can take your usual dose. This test measures the medication in your blood, so timing your dose around the test isn’t necessary unless instructed otherwise.
Will this test affect my medication dose?
Possibly. If your levels are too low or too high, your provider may adjust your dose to improve effectiveness or reduce side effects. Always follow their guidance.
  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