What's this test for?

This test is ideal if you're experiencing constant fatigue, unexplained muscle pain or weakness, frequent illnesses, or feeling down and moody. It measures your vitamin D levels to identify deficiency, which is extremely common and affects bone health, immune function, energy levels, and even your mood. Many people use this test when they suspect low vitamin D from limited sun exposure or when symptoms suggest their body isn't getting enough of this essential nutrient.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your vitamin D levels mean for your energy, bone health, and immune function. These notes include personalized recommendations like how much sun exposure to aim for, dietary changes to increase vitamin D intake, and whether supplementation might help. You'll also get the standard lab report and can track your vitamin D levels over time using our trends feature to see how your interventions are working.

What's included in this test?

This test measures Vitamin D, 25-OH, D2 (the synthetic form found in supplements), Vitamin D, 25-OH, D3 (the natural form your body makes from sunlight), and Vitamin D, 25-OH, Total (your overall vitamin D status). By measuring both forms separately using advanced technology, this test provides a complete picture of your vitamin D levels and helps determine whether deficiency is due to lack of sun exposure, inadequate diet, or poor supplement absorption. Together, these measurements reveal how well your body is maintaining this essential nutrient that impacts bone strength, immune health, energy, and mood.

How should I prepare for this test?

Fasting is preferred but not required for this test, so you can have it done at your convenience. Results typically take about 5 business days, though if confirmation testing is needed, it may take a bit longer. You can take your regular medications and supplements as usual unless otherwise instructed by your healthcare provider.

When will I get my results?

You can expect your results in approximately 5 business days after your blood sample is collected. In some cases, if confirmation testing is required to verify your levels, the turnaround time may be extended slightly. You'll receive an email notification as soon as your results are ready to view in your secure online account.

Who should consider getting this test?

This test is especially important for people who spend most of their time indoors, live in northern climates with limited sunlight, have darker skin (which produces vitamin D less efficiently), or are over 50 when vitamin D production naturally decreases. It's also valuable for anyone experiencing fatigue, bone pain, frequent infections, depression, or slow wound healing. People with conditions that affect nutrient absorption, such as digestive issues, should also consider testing.

What symptoms indicate I may need this test?

Common signs of low vitamin D include persistent tiredness even after adequate rest, muscle aches or weakness, bone pain especially in the back or legs, getting sick frequently with colds or infections, and feeling down or experiencing seasonal mood changes. You might also notice slow wound healing, hair loss, or difficulty concentrating. These symptoms can be subtle and develop gradually, making testing important for confirmation.

How can I naturally increase my vitamin D levels?

The most effective way is getting regular sun exposure by spending 10-30 minutes in midday sun several times per week without sunscreen, though this depends on your skin tone and location. Include vitamin D-rich foods like fatty fish (salmon, mackerel, sardines), egg yolks, fortified milk and cereals, and mushrooms exposed to UV light. If you live in areas with limited sunlight or have difficulty getting adequate sun exposure, a vitamin D3 supplement is often recommended after testing confirms your levels.

What is vitamin D and why does it matter?

Vitamin D is often called the sunshine vitamin because your body produces it when your skin is exposed to sunlight. It's essential for absorbing calcium to build strong bones, supporting your immune system to fight infections, regulating mood and energy levels, and even supporting muscle function. Unlike most vitamins, it acts more like a hormone in your body, affecting cells throughout your entire system. Without enough vitamin D, you're at higher risk for bone problems, frequent illnesses, fatigue, and mood issues.

What does low vitamin D mean?

Low vitamin D means your body doesn't have enough of this nutrient to support optimal health. This is extremely common, especially in winter months or for people who spend most time indoors. Low levels can lead to weakened bones, increased risk of fractures, frequent infections due to a compromised immune system, persistent fatigue, muscle weakness, and mood problems including seasonal depression. The good news is that vitamin D deficiency is easily correctable through increased sun exposure, dietary changes, or supplementation.

How often should I retest my vitamin D levels?

If your initial test shows low vitamin D and you start supplementation or make lifestyle changes, retest in 3-4 months to see if your levels have improved and to ensure you're taking the right dose. Once your levels are optimal, testing once or twice a year is typically sufficient for monitoring, especially before and after winter when levels tend to drop. If you have conditions affecting vitamin D absorption or are on high-dose supplementation, your healthcare provider may recommend more frequent monitoring.

Getting your blood test with us is easy, private & backed by the power of science.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 support@privatemdlabs.com 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 support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

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 support@privatemdlabs.com. 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 support@privatemdlabs.com.

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 support@privatemdlabs.com. 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 support@privatemdlabs.com and we'll gladly help you.

Vitamin D Test - Check Fatigue & Energy Levels

Getting your blood test with us is easy, private & backed by the power of science.

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!

754-799-7833

[email protected]

Vitamin D Test for Fatigue, Muscle Pain, and Low Mood

Vitamin D

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

How should I prepare for this test?

What's included in this test?

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

Vitamin D Test for Fatigue, Muscle Pain, and Low Mood

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

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