Why Private MD Labs?
90-day money-back guarantee Lab order in minutes Save a trip to the doctor Low prices since 2005 Labs within 2 miles
Sample image
Sample report
Aldosterone serum test for individuals experiencing blood pressure, fluid retention, or kidney concerns

Blood Test for Blood Pressure and Fluid Balance Issues

Aldosterone serum

Google
3,138 reviews
  • Checks hormone for blood pressure control.
  • Measures salt and water balance hormone.
  • Evaluates kidney and adrenal gland function.
First results as soon as overnight*

90 day happiness guarantee

We stand behind our service

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

90 day happiness guarantee

We stand behind our service

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

What's this test for?

This test is ideal if you're experiencing high or low blood pressure that's difficult to control, unexplained swelling in your legs or feet, muscle weakness, or excessive thirst. It helps identify problems with your adrenal glands or kidneys that affect how your body regulates salt, water, and blood pressure. Many people use this test when their doctor suspects a hormonal cause for their blood pressure issues or fluid retention.

How should I prepare for this test?

No fasting is needed for this test, so you can eat and drink normally before your blood draw. However, your doctor may provide specific instructions about medications (especially blood pressure medications, diuretics, or hormones) or dietary sodium intake, as these can affect aldosterone levels. It's best to check with your healthcare provider about whether you should make any temporary changes before testing.

What's included in this test?

This test measures aldosterone, a hormone produced by your adrenal glands that controls how your kidneys handle salt and water. Aldosterone levels directly impact your blood pressure, fluid retention, and electrolyte balance, making it essential for diagnosing conditions like primary aldosteronism (a common but often overlooked cause of high blood pressure) or adrenal insufficiency. This single measurement can reveal why you're experiencing difficult-to-control blood pressure, unexplained swelling, or persistent weakness.

What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining what your aldosterone level means for your blood pressure, kidney function, and fluid balance. These notes include personalized recommendations like dietary changes (especially sodium and potassium intake), supplement suggestions, or whether you should follow up with an endocrinologist or nephrologist. You'll also get the standard lab report and can track your aldosterone levels over time using our trends feature, which is especially helpful if you're managing blood pressure or making lifestyle adjustments.
When will I get my results?
Most aldosterone test results are available within 3-5 business days after your blood sample reaches the lab. You'll receive an email notification when your results are ready, along with easy-to-understand doctor notes and your complete lab report. The timeline may vary slightly depending on the lab's processing schedule and your location.
Who should consider getting this test?
This test is important for people with high blood pressure that doesn't respond well to medication, especially if diagnosed before age 40. It's also useful for those experiencing low blood pressure with dizziness, unexplained low potassium levels, muscle weakness or cramps, or a family history of early-onset hypertension. Your doctor may also recommend it if they suspect adrenal gland problems affecting your fluid and electrolyte balance.
What symptoms indicate I may need this test?
Common symptoms include persistent high blood pressure that's hard to control with medication, frequent headaches, muscle weakness or cramps, excessive thirst or urination, and swelling in your legs or ankles. You might also experience fatigue, irregular heartbeat, or tingling sensations. These symptoms can indicate that your aldosterone levels are affecting your body's ability to regulate blood pressure and fluid balance properly.
How can I naturally support healthy aldosterone levels?
Managing your sodium intake is key - avoid excessive salt if you have high aldosterone, but ensure adequate sodium if levels are low. Include potassium-rich foods like bananas, sweet potatoes, spinach, and avocados to help balance electrolytes. Regular moderate exercise, stress management through meditation or yoga, and maintaining a healthy weight can help support adrenal function. Staying well-hydrated and getting 7-8 hours of quality sleep also promotes healthy hormone balance.
What does high aldosterone mean?
High aldosterone typically means your adrenal glands are producing too much of this hormone, which causes your kidneys to retain sodium and water while losing potassium. This can lead to high blood pressure, low potassium levels, muscle weakness, and fluid retention. Common causes include primary aldosteronism (overactive adrenal glands), kidney disease, heart failure, or dehydration. Your doctor can help determine the underlying cause and appropriate treatment.
What does low aldosterone mean?
Low aldosterone suggests your adrenal glands aren't producing enough of this hormone, which can cause low blood pressure, dizziness when standing, excessive sodium loss, and high potassium levels. This may indicate Addison's disease (adrenal insufficiency), certain medications affecting adrenal function, or genetic conditions. Low aldosterone can make you feel weak, tired, and dehydrated, and typically requires medical evaluation and possible hormone replacement therapy.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
  3. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
  4. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
  5. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
  6. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.
How do I know which test to get?
In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at [email protected], and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at [email protected]. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Only HSA & FSA is accepted.

Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email [email protected].
Can I cancel my order?
Yes.

We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email [email protected].

You can read more about our cancellation policy here.
How can I find a lab location near me?
During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Instant orders, results often overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
Aldosterone 28 ng/dL
Demo results
Low Optimal 3 - 16 High
28 ng/dL

What this means

Your aldosterone level is elevated above the optimal range, which may be contributing to high blood pressure, fluid retention, or low potassium levels. Elevated aldosterone causes your kidneys to retain sodium and water while losing potassium, which can make blood pressure harder to control and cause muscle weakness or cramping.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Blood Test for Blood Pressure and Fluid Balance Issues

Google
3,138 reviews
  • Checks hormone for blood pressure control.
  • Measures salt and water balance hormone.
  • Evaluates kidney and adrenal gland function.

1,000,000+ blood tests later, here's what our customers say

Google reviews 3138 reviews Next
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.