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 produced by your adrenal glands that helps regulate blood pressure and fluid balance.

Quick summary

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

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

Key facts at a glance

LOINC
27848-1
Short code
LH sp2 p chal SerPl-aCnc
Synonyms
LH sp2 p chal SerPl-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
1.5
Ref high
9
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
83002
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 affecting your adrenal glands, such as hyperaldosteronism (too much aldosterone) or hypoaldosteronism (too little). It can also help diagnose conditions like primary aldosteronism, adrenal tumors, or certain kidney or heart problems.

What Does the Result Mean?

Results may indicate whether your aldosterone levels are too high or too low, which can affect your blood pressure, kidney function, or other health issues. Your doctor will interpret the result in relation to your overall health and symptoms.

Common Conditions Monitored

This test is often used to diagnose or monitor conditions like hypertension (high blood pressure), kidney disease, or adrenal disorders, such as Conn’s syndrome (primary aldosteronism).

Sample Collection Details

A blood sample is drawn from a vein, usually in your arm. You may need to fast for a few hours before the test, depending on your doctor’s instructions. Avoid smoking or caffeine before the test if advised.

Reference range

Follicular: 1.5-9.0 mIU/mLN/A

Specimen: serum

For females: inform if menstrual cycle status. For certain tests, timing within menstrual cycle may matter.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Aldosterone Level

Frequently asked questions

How Does This Test Help Your Doctor?
Your doctor uses aldosterone levels to assess whether your blood pressure is controlled by hormone imbalances, to check for adrenal gland disorders, or to evaluate kidney function. High levels may suggest conditions like hypertension or adrenal tumors, while low levels could indicate adrenal insufficiency or kidney problems.
What Are Typical Values?
Reference ranges vary by lab and may differ between adults and children. Your doctor will provide your specific result and compare it to your personal baseline.
Can I Eat or Drink Before the Test?
Follow your doctor’s instructions carefully. Some tests require fasting, while others may allow water or light meals. Avoid caffeine or smoking before the test if directed.
  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