Selenium, 24-Hour Urine
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Blood Test for Fatigue, Low Energy, and Immune Issues
Selenium, 24-Hour Urine
- Pinpoint selenium levels affecting your energy
- Reveal hidden factors behind your fatigue
- Clarify the cause of your immune issues
$603
Example results
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 unexplained fatigue, frequent infections, or a weakened immune system. Selenium is an essential mineral that supports immune function, thyroid health, and antioxidant protection, so low levels can contribute to low energy, poor immune response, and even thyroid problems. Many people use this test when they suspect nutritional deficiencies may be affecting their overall health and vitality.
How should I prepare for this test?
This is a 24-hour urine collection test, meaning you'll collect all urine produced over a full 24-hour period in a special container provided by the lab. You'll typically discard the first morning urine and then collect all subsequent urine until the same time the next morning. Follow the specific collection instructions provided by your lab or healthcare provider, and keep the collection container refrigerated or cool during the collection period.
What's included in this test?
This test measures the amount of selenium excreted in your urine over a 24-hour period, which provides a reliable picture of your body's selenium status. Selenium is a critical trace mineral that supports immune system function, acts as a powerful antioxidant, and is essential for proper thyroid hormone production. By assessing your selenium levels, this test helps identify deficiencies that may be causing fatigue, frequent illness, or thyroid-related symptoms.
What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining what your selenium levels mean for your energy, immune function, and overall health. These notes include personalized recommendations like dietary changes, supplement guidance, or whether you should consider further thyroid testing. You'll also get the standard lab report and can track your selenium levels over time using our trends feature to see how dietary interventions or supplementation are working.
When will I get my results?
Most 24-hour urine tests, including selenium testing, typically return results within 3-7 business days after the lab receives your sample. The exact turnaround time may vary depending on the lab's workload and testing schedule. You'll be notified as soon as your results are ready and available in your secure online account.
Who should consider getting this test?
This test is ideal for people experiencing chronic fatigue, frequent infections, or immune system weakness. It's also important for those with thyroid conditions, anyone living in selenium-deficient geographical areas, people with digestive disorders that affect nutrient absorption, and individuals on restricted diets that may limit selenium intake. Anyone concerned about their nutritional status or experiencing unexplained health issues related to immunity or energy should consider this test.
What symptoms indicate I may need this test?
Common signs of selenium deficiency include persistent fatigue and low energy, frequent colds or infections, muscle weakness, hair loss or brittle nails, and brain fog or difficulty concentrating. You might also experience thyroid problems like weight changes or temperature sensitivity, since selenium is crucial for thyroid function. If you have several of these symptoms or they're affecting your daily life, checking your selenium status can provide valuable insights.
How can I naturally support my selenium levels?
The best way to boost selenium naturally is through diet by including selenium-rich foods like Brazil nuts (just 2-3 per day can meet your needs), seafood, organ meats, eggs, and whole grains. Cooking and food processing can reduce selenium content, so focus on fresh, minimally processed foods. Avoid excessive alcohol consumption and manage digestive health, as both can interfere with selenium absorption. If you live in a selenium-deficient region or have absorption issues, you may need supplementation under professional guidance.
What is selenium and why does it matter?
Selenium is an essential trace mineral that your body needs in small amounts but can't produce on its own. It acts as a powerful antioxidant, protecting your cells from damage, and is critical for immune system function, helping your body fight off infections. Selenium also plays a vital role in thyroid hormone metabolism, reproductive health, and DNA synthesis. Without adequate selenium, you may experience weakened immunity, thyroid dysfunction, fatigue, and increased vulnerability to chronic diseases.
What does low selenium mean?
Low selenium levels indicate your body isn't getting enough of this essential mineral, which can weaken your immune system and make you more susceptible to infections and illnesses. It can also impair thyroid function, leading to fatigue, weight changes, and mood issues, since selenium is needed to convert thyroid hormones into their active forms. Low selenium may result from poor dietary intake, living in selenium-depleted soil regions, digestive disorders affecting absorption, or increased needs during pregnancy or illness.
How’s this work?
Long story short:
- In the test options, use the filters or search box to narrow your choices and find the test you want.
- 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.
- 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.
- 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.
- 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.
- 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.
- You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! 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?
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?
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?
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?
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?
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.
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Save a trip to the doctor, go directly to the lab
Instant orders, results often overnight*
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Demo results
Selenium, 24-Hour Urine
42 mcg/24hr
Demo results
Low
Optimal 55 - 120
High
42 mcg/24hr
What this means
Your 24-hour urine selenium level is below the optimal range, indicating your body may not be getting enough of this essential mineral. This deficiency can contribute to fatigue, weakened immune function, and suboptimal thyroid performance, as selenium plays a critical role in all these areas.
Recommended actions
Add 2-3 Brazil nuts daily to your diet, which are extremely rich in selenium
Include more selenium-rich foods like seafood, eggs, chicken, and whole grains
Ensure proper digestive health to optimize selenium absorption
Retest in 8-12 weeks after making dietary changes to monitor improvement
* 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
Order your test
Save a trip to the doctor. Your results will come with clear, friendly explanations.
Takes 2 minutes
Book an appointment
Visit any of our 4,000 nearby lab locations to have your samples collected.
Book or walk-in
Get results
Receive a clear, easy-to-digest health report by email & SMS within a few business days.
Get answers, fast
Blood Test for Fatigue, Low Energy, and Immune Issues
- Pinpoint selenium levels affecting your energy
- Reveal hidden factors behind your fatigue
- Clarify the cause of your immune issues
$603
Example results
1,000,000+ blood tests later, here's what our customers say
3138 reviews
Still got questions?
Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.
