Serum/plasma mass concentration of aldosterone (measured via mass spectrometry)
This test measures the amount of aldosterone, a hormone that helps regulate blood pressure and fluid balance in your body.
["Aldosterone helps control how much sodium and potassium your body retains, which affects your blood pressure and fluid levels."]
Key facts at a glance
- LOINC
- 27369-8
- Short code
- GH 2.5h p chal SerPl-mCnc
- Synonyms
- GH 2.5h p chal SerPl-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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 (a rare disorder causing high blood pressure), adrenal gland issues, or to check for hormonal imbalances that affect blood pressure or kidney function. It may also be used in patients with hypertension (high blood pressure) who don’t respond well to usual treatments.
What Does a High or Low Level Mean?
High aldosterone levels may indicate conditions such as aldosteroneism, kidney disease, or certain medications that affect hormone balance. Low levels could suggest adrenal insufficiency or other hormonal disorders. Your doctor will interpret results in the context of your overall health and symptoms.
Sample Collection and Preparation
A blood sample is drawn from a vein in your arm. The sample is collected in a special tube that separates serum or plasma from blood cells. This test is typically done after fasting for 8–12 hours, depending on your doctor’s instructions.
What to Expect Before the Test
There are no special preparations needed beyond following your doctor’s instructions. Avoid smoking or consuming caffeine for a few hours before the test if advised. Wear comfortable clothing and plan to rest after the blood draw.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Aldosterone plays a critical role in maintaining electrolyte balance and blood pressure. Abnormal levels can lead to complications such as high blood pressure, kidney problems, or fluid imbalances. This test helps identify conditions that may require treatment, such as hormone therapy or medication adjustments to manage symptoms.
Short name
Aldosterone level
Frequently asked questions
How long does it take to get results?
What are common causes of high aldosterone levels?
Can I eat or drink 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 16, 2026. · Read our editorial policy