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Serum/plasma concentration of angiotensin II receptor blocker (candesartan) measured by immunoassay

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

This test measures the level of candesartan, a medication used to treat high blood pressure or heart failure, in your blood.

Quick summary

["Understanding your medication levels helps your doctor monitor effectiveness and adjust your treatment."]

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

Key facts at a glance

LOINC
73490-5
Short code
Candesartan ind plt IgM SerPl Ql FC
Synonyms
Candesartan 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 if you’re taking candesartan to check if your blood pressure or heart condition is being controlled. It can also help detect potential issues like low blood pressure or kidney problems.

What to Expect Before the Test

No special preparation is needed, but avoid eating or drinking anything (except water) for 8–12 hours before the test if instructed. Fasted results may be more accurate for some medications.

What the Test Involves

A healthcare provider will draw blood from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause discomfort. The blood sample is sent to a lab for analysis.

What the Results Mean

Results show your current candesartan level in your blood. Low levels may mean your dose isn’t working well, while very high levels could signal kidney issues or improper dosing. Your doctor will interpret results in the context of your overall health.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Angiotensin II Receptor Blocker (Candesartan) Level

Frequently asked questions

How does candesartan work in the body, and why is monitoring its levels important?
Candesartan is an angiotensin II receptor blocker that relaxes blood vessels to lower blood pressure. Monitoring its levels helps prevent side effects (e.g., dizziness) or ensure it’s working properly, especially in patients with kidney disease or heart failure.
What are the typical symptoms if my candesartan level is too low or too high?
Low levels may not reduce blood pressure effectively, leading to symptoms like headaches, fatigue, or persistent high blood pressure. High levels could cause kidney strain or excessive dizziness, though this is rare with proper dosing.
How often should I get this test?
Your doctor will determine frequency based on your medication regimen, health status, and other medications you take. Follow their instructions—typically every few months or as needed for adjustments.
  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