Skip to content

Carvedilol concentration in plasma

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

This test measures the amount of carvedilol, a beta-blocker medication, in your blood plasma. It helps your doctor assess whether your dose is working effectively or if adjustments are needed.

Quick summary

["This test helps monitor your carvedilol blood levels for optimal heart health and safety."]

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

Key facts at a glance

LOINC
73480-6
Short code
Carvedilol ind plt IgM SerPl Ql FC
Synonyms
Carvedilol 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 carvedilol to manage conditions like high blood pressure, heart failure, or angina. It helps ensure the medication is at the right level to control symptoms without causing side effects.

What Does the Result Mean?

Results are typically compared to your individual baseline or clinical guidelines, but they don’t have a single universal reference range. Your doctor will interpret the results in relation to your medical needs and symptoms.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The plasma portion is then tested for carvedilol using a sensitive laboratory method, often immunoassay.

What Are Possible Results?

Low levels may indicate the medication isn’t working as intended, while very high levels could signal toxicity or improper dosing. Your doctor will discuss findings with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Carvedilol monitoring is critical because it’s a medication with a narrow therapeutic window. Optimal levels help prevent complications like heart rhythm issues or insufficient blood pressure control. Regular monitoring ensures your dose remains safe and effective for your condition.

Short name

Carvedilol Level

Frequently asked questions

How often should I expect this test?
The frequency depends on your treatment plan. Your doctor may recommend testing every few weeks, months, or as needed to adjust your dose based on your response and lab results.
What should I do if my carvedilol level is too low or too high?
If your results are outside the expected range, your doctor will review your medication, dosage, and other health factors to determine if your dose needs to be changed. They may also check for interactions with other medications.
Can I eat or drink before this test?
You may eat and drink normally before the test, as it doesn’t require fasting. However, always follow your doctor’s specific instructions for your blood draw.
  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