Skip to content

24-Hour Urinary Aldosterone Excretion Rate

Published: August 9, 2026Updated: August 16, 2026

This test measures how much aldosterone your kidneys release into your urine over 24 hours. Aldosterone helps regulate blood pressure and fluid balance in your body.

Quick summary

["Helps diagnose conditions affecting your kidneys, hormones, or blood pressure."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
14689-4
Short code
D-ALA 24h Ur-sRate
Synonyms
D-ALA 24h Ur-sRate
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your doctor may order this test if they suspect conditions like primary aldosteroneism (a hormone disorder), kidney disease, or other conditions affecting how your body manages sodium, potassium, or blood pressure. It can also help check for adrenal gland issues or evaluate responses to certain medications.

What to Expect Before the Test

You’ll need to collect all your urine for a full 24-hour period, typically starting from one morning after waking up until the same time the next day. Drink plenty of fluids to help your urine flow normally. Avoid special diets unless instructed by your doctor.

What Happens During the Test

No special preparation is needed beyond collecting urine samples. Your healthcare provider will guide you on how to properly store and transport the samples to the lab. The lab will analyze the urine for aldosterone levels.

What the Results Mean

Results are compared to standard ranges to help identify whether your aldosterone excretion is too high or too low. High levels may indicate conditions like primary aldosteroneism, while low levels could suggest adrenal insufficiency or other issues.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Aldosterone Urine Rate

Frequently asked questions

What causes elevated aldosterone levels in urine?
Elevated aldosterone excretion can be caused by conditions like primary aldosteroneism (also called Conn’s syndrome), kidney disease, or certain medications. It may also be seen in people with high blood pressure or heart problems. Your doctor will review your medical history and other test results to determine the cause.
What causes low aldosterone levels in urine?
Low aldosterone excretion might be linked to adrenal gland disorders (such as adrenal insufficiency or adrenal tumors), kidney problems, or certain medications. It can also occur in people with severe dehydration or during certain medical conditions affecting hormone regulation. Further testing may be needed to identify the exact reason.
How often should this test be repeated?
The frequency depends on your symptoms and diagnosis. If your doctor suspects a chronic condition, they may recommend retesting every few months or annually. Follow-up tests are often tailored to your ongoing treatment plan and health needs.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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