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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 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 affects your blood pressure and heart function."]

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

Key facts at a glance

LOINC
25948-1
Short code
LH sp6 p chal SerPl IRP1-aCnc
Synonyms
LH sp6 p chal SerPl IRP1-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
Method
st-irp
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 diagnose or monitor conditions like primary aldosteroneism (Conn’s syndrome), adrenal tumors, or to check for signs of low blood pressure, kidney problems, or hormonal imbalances. It can also help evaluate symptoms such as high blood pressure, frequent urination, or muscle weakness.

What Does the Result Mean?

Results may vary based on your health condition and other factors. High aldosterone levels can lead to increased blood pressure or kidney issues, while low levels may indicate adrenal insufficiency or other hormonal disorders. Your doctor will interpret the result in the context of your overall health and symptoms.

How Is This Test Performed?

A blood sample is drawn from a vein in your arm. The sample is sent to a lab where it is analyzed to measure aldosterone concentration using a sensitive chemical test.

What Can Affect This Test?

Several factors can influence aldosterone levels, including medications (such as certain blood pressure drugs), stress, diet (especially high salt intake), and certain medical conditions like kidney disease or heart failure. Avoiding certain foods and medications for a few days before testing may help ensure accurate results.

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

What Are Common Symptoms?
Symptoms of abnormal aldosterone levels may include unexplained high blood pressure, frequent urination, low potassium levels (which can cause muscle cramps or weakness), or signs of adrenal gland issues like fatigue or weight changes. If your doctor suspects an aldosterone-related disorder, they may recommend this test along with other evaluations.
How Often Should I Get This Test?
The frequency of this test depends on your medical condition and treatment plan. If you have a chronic condition like hypertension or adrenal disease, your doctor may recommend regular monitoring. Follow-up tests may be scheduled every few months or as needed based on your response to treatment.
Can I Prepare for This Test?
Yes, your doctor may provide specific instructions, such as avoiding certain medications (like potassium-sparing diuretics) or dietary changes (like reducing salt intake) for a few days before testing to get the most accurate results. Always follow your healthcare provider’s guidance.
  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