Serum or Plasma Mass Concentration of Aldosterone
This test measures the amount of aldosterone, a hormone produced by your adrenal glands that helps regulate blood pressure and fluid balance.
["Aldosterone helps control how much sodium and potassium your body retains, which affects blood pressure and fluid levels in your body."]
Key facts at a glance
- LOINC
- 105024-4
- Short code
- NDM9
- Synonyms
- blaNDM-9 Islt/Spm Ql
- Category
- chemistry
- Sample
- serum
- Container
- Sterile transport container or appropriate bacterial culture transport medium
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 0 years
- Method
- molgen
- CPT
- 87153
- SNOMED
- 12244931000087108
- Specimen volume
- 1-2 mL of specimen or bacterial isolate
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-70°C or below): 30 days for extracted DNA
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–48 hours
- Order
- routine
Why Is This Test Done?
Your doctor may order an aldosterone test to check for conditions like primary aldosteroneism (also called Conn’s syndrome), adrenal gland tumors, or to evaluate symptoms such as high blood pressure, low potassium levels, or unusual thirst and urination.
What Does a High or Low Level Mean?
High aldosterone levels may indicate overactivity of your adrenal glands or certain kidney conditions. Low levels might suggest adrenal insufficiency or other hormonal imbalances. Your results will be interpreted by your healthcare provider in the context of your symptoms and other tests.
Sample Collection and Preparation
A blood sample is taken from a vein in your arm. You may feel a small pinch when the needle is inserted, but the procedure is quick. If you’re on a low-sodium diet, your doctor may instruct you to follow specific guidelines for 2–3 days before testing to ensure accurate results.
What to Expect After the Test
After the blood draw, you can usually return to your normal activities immediately. There may be a small bruise or slight discomfort at the site, but this typically fades within a few days. No special preparation is needed after the test unless your doctor instructs otherwise.
Reference range
Negative (blaNDM-9 gene not detected)N/A
No special patient preparation required. Sample should be collected prior to initiation of antimicrobial therapy when clinically feasible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Aldosterone Level
Frequently asked questions
How long does it take to get my aldosterone test results?
Can I eat or drink anything before this test?
What are the most common causes of abnormal 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