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Serum/plasma mass concentration of aldosterone

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

This test measures the amount of aldosterone, a hormone that helps regulate blood pressure and fluid balance in your body.

Quick summary

["Aldosterone helps control how much sodium and potassium your body retains, which affects your blood pressure and fluid levels."]

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

Key facts at a glance

LOINC
27835-8
Short code
GH sp11 p chal SerPl-mCnc
Synonyms
GH sp11 p chal SerPl-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

What Is Aldosterone?

Aldosterone is a hormone produced by your adrenal glands, located on top of your kidneys. It plays a key role in managing your body’s balance of sodium, potassium, and water, which directly influences your blood pressure. Too much or too little aldosterone can lead to health issues, such as high blood pressure or fluid imbalances.

Why Might You Need This Test?

Your doctor may order this test if you have symptoms like high blood pressure, unusual thirst, frequent urination, or signs of low potassium levels. It can also help diagnose conditions like primary aldosteroneism (Conn’s syndrome) or evaluate adrenal gland function.

How Is the Test Done?

A blood sample is taken from a vein in your arm. The sample is sent to a lab where it is analyzed to measure aldosterone levels. This test is typically done after fasting for several hours to ensure accurate results.

What Are Common Results?

Results are not provided with specific reference ranges, as they depend on individual health, medications, and other factors. Your doctor will interpret the results in the context of your overall health and symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Aldosterone Level

Frequently asked questions

How Does Aldosterone Work in My Body?
Aldosterone helps your kidneys retain sodium and excrete potassium, which helps maintain healthy blood pressure. Abnormal levels can cause conditions like hypertension, heart problems, or electrolyte imbalances.
What Conditions Might Be Detected?
This test can help identify conditions such as primary aldosteronism (too much aldosterone), adrenal insufficiency (too little aldosterone), or other hormonal imbalances affecting blood pressure and fluid balance.
How Often Should I Get This Test?
Your doctor will determine the frequency based on your health needs, symptoms, or ongoing treatment. Follow-up tests may be scheduled if you have chronic conditions like high blood pressure or kidney issues.
  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