Plasma Aldosterone Concentration (Mass Concentration)
This test measures the amount of aldosterone, a hormone produced by your adrenal glands. It helps regulate blood pressure and fluid balance in your body.
["Aldosterone helps control how much salt and water your body retains, which affects your blood pressure and fluid levels."]
Key facts at a glance
- LOINC
- 57585-2
- Short code
- Aldost 3h p 25 mg Cpl PO SerPl-mCnc
- Synonyms
- Aldost 3h p 25 mg Cpl PO SerPl-mCnc
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 80
- Ref high
- 200
- Critical range
- 20 N/A – 400 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 84436
- SNOMED
- 302346007
- 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 Might Be Ordered
Your doctor may order this test if they suspect conditions like primary aldosteronism (a rare disorder where your adrenal glands produce too much aldosterone), high blood pressure that doesn’t respond to medication, or other hormonal imbalances affecting your kidneys or blood pressure.
What to Expect Before the Test
No special preparation is needed for this test. You’ll provide a blood sample, usually drawn from a vein in your arm. If you’re taking medications that affect blood pressure or electrolytes, let your doctor know before the test.
What the Results Mean
Results are interpreted by your healthcare provider based on your overall health, symptoms, and other test results. Elevated levels may indicate conditions like hyperaldosteronism, while low levels could suggest adrenal insufficiency or other issues.
Common Conditions Linked to Aldosterone Levels
High aldosterone levels can lead to conditions like hypertension (high blood pressure), kidney problems, or low potassium levels. Low levels may be linked to conditions such as Addison’s disease or certain medications that suppress hormone production.
Reference range
Adult: 80-200 ng/dLN/A
Take your thyroid medication after the blood draw if applicable. No fasting required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Aldosterone Level
Frequently asked questions
How often will I need this test?
What are the normal ranges for this test?
Can I eat or drink anything before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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 17, 2026. · Read our editorial policy