Plasma Aldosterone Concentration (Mass Concentration)
This test measures the amount of aldosterone, a hormone produced by your adrenal glands, in your blood plasma. It helps assess how well your body regulates sodium and potassium balance and blood pressure.
["Aldosterone helps control blood pressure and fluid balance by affecting kidney function."]
Key facts at a glance
- LOINC
- 57582-9
- Short code
- Aldost pre 25 mg Cpl PO SerPl-mCnc
- Synonyms
- Aldost pre 25 mg Cpl PO SerPl-mCnc
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 20
- Ref high
- 400
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82670
- 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 electrolyte imbalances (such as low potassium). It may also be used to evaluate conditions like primary aldosteronism (an adrenal gland disorder) or to monitor treatment for hypertension or kidney disease.
What to Expect Before the Test
No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood. If you’re on medications that affect blood pressure or kidney function, let your doctor know before the test.
What the Results Mean
Results are interpreted based on your overall health, symptoms, and other test results. High aldosterone levels may indicate conditions like hyperaldosteronism, while low levels could suggest adrenal insufficiency or other hormonal imbalances.
Common Conditions Linked to Aldosterone Levels
High aldosterone levels can lead to high blood pressure, kidney problems, or low potassium. Low levels may cause fatigue, dizziness, or adrenal gland disorders. Your doctor will discuss these findings with you in detail.
Reference range
Premenopausal: 20-400 pg/mL; Postmenopausal: <30 pg/mLN/A
No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Aldosterone level
Frequently asked questions
What causes abnormal aldosterone levels?
How often should I get this test?
Can diet or medications affect aldosterone levels?
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