Serum/plasma concentration of aldosterone (mass concentration)
This test measures the amount of aldosterone, a hormone produced by your adrenal glands that helps regulate blood pressure and fluid balance in your body.
["Aldosterone helps control how much sodium and potassium your body retains, which can impact your blood pressure and overall fluid levels."]
Key facts at a glance
- LOINC
- 12932-0
- Short code
- TSH p chal SerPl-aCnc
- Synonyms
- TSH p chal SerPl-aCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 0.4
- Ref high
- 4
- Critical range
- 0.1 N/A – 20 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 84443
- SNOMED
- 301343003
- 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 recommend this test if you have symptoms like high blood pressure, unusual thirst, frequent urination, or signs of fluid imbalance. It may also be used to diagnose conditions such as primary aldosteroneism (Conn’s syndrome) or adrenal insufficiency.
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 on medications that affect aldosterone levels, let your healthcare provider know.
What the Results Mean
Results help determine if your aldosterone levels are too high or too low, which can guide treatment decisions. High levels might suggest conditions like hypertension or adrenal tumors, while low levels could indicate adrenal gland problems.
Common Conditions Linked to Aldosterone Levels
Abnormal aldosterone levels can be linked to conditions like hypertension, heart disease, kidney problems, or hormonal imbalances. Your doctor will interpret results in the context of your overall health and symptoms.
Reference range
Adult: 0.4-4.0 mIU/LN/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.
◆Associated findings1
Short name
Aldosterone level
Frequently asked questions
Why might my doctor want to check my aldosterone level?
How long will I need to wait for my results?
Can I take my medications before the 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 16, 2026. · Read our editorial policy