Skip to content

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 can affect your blood pressure and heart function."]

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

Key facts at a glance

LOINC
49892-3
Short code
GH sp1 p chal SerPl-mCnc
Synonyms
GH sp1 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

Why is this test done?

Your doctor may order this test to check for conditions like primary aldosteroneism (Conn’s syndrome), adrenal gland tumors, or to monitor treatment for conditions affecting your blood pressure or kidney function.

What does the result mean?

Higher than expected levels might suggest overactivity of your adrenal glands or certain kidney problems. Lower levels could indicate adrenal insufficiency or other hormonal imbalances. Your doctor will interpret the result in relation to your overall health and symptoms.

How is this test performed?

A blood sample is taken from a vein in your arm. The blood is then sent to a lab where it is analyzed to measure aldosterone concentration.

What should you prepare for?

No special preparation is usually needed, but you may be asked to avoid certain medications or foods that could affect the results, such as salt intake or some blood pressure medications. Always follow your doctor’s instructions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical significance: This test is critical for diagnosing and managing conditions that affect aldosterone levels, such as hypertension, adrenal disorders, or electrolyte imbalances. Elevated aldosterone can lead to high blood pressure and kidney issues, while low levels may indicate adrenal insufficiency or other endocrine problems.

Short name

Aldosterone level

Frequently asked questions

What are common reasons for this test?
Common reasons include evaluating high blood pressure that doesn’t respond to treatment, checking for adrenal tumors, or diagnosing conditions like primary aldosteronism.
How long does it take to get results?
Results are typically available within a few days to a week, depending on your lab’s processing time.
Can I eat or drink before this test?
Standard fasting is not required for this test, but follow your healthcare provider’s advice regarding diet or medications to avoid potential interference with results.
  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