Vitamin D Test
Vitamin D Test

Measure Your Personal Vitamin D Levels and Compare It To Healthy Ranges

This at-home test can be used to ensure you have adequate levels of Vitamin D to maintain bone and cellular health.
25-OH D
Collection Method
Red icon of a blood drop to represent finger prick collection methodFinger Prick Blood
At-home Vitamin D Test
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What's Measured
How it Works
alt text goes here Once you order, the test materials are delivered to your doorstep.
alt text goes here Enter the unique kit ID included with your kit at
1 Complete a simple finger prick collection and return with prepaid shipping.
1 An independent board-certified physician will review your results.
1 Once verified, you’ll receive your results on our secure platform within days.
What's Included
Finger prick blood card for collecting your blood sample
Pre-paid shipping both ways
Detailed directions to guide you
Gauze and bandages
Help along the way if you need it
Biohazard bag for returning your sample
Single-use Lancets for pricking your finger
Alcohol pad for cleaning your finger
Your Results
Easy to Understand
Gain meaningful insights about your health with easy-to-understand test results. Download and share with your healthcare provider, family, or friends. We also provide you with additional resources and helpful tips along the way.
View a personalized report of each marker tested as well as detailed information about what your results mean for you.
Take action on your health and wellness. Use your report to help guide your next steps. Set up a discussion with a healthcare professional to go over your results further.
Why Everlywell

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Dive Deeper

Why is vitamin D important?

This at-home vitamin D blood test lets you test for vitamin D deficiency or toxicity in the comfort of your own home with just a simple finger prick. But why does vitamin D matter in the first place?

Vitamin D plays a vital role in the body’s ability to regulate the absorption and levels of calcium and phosphorus. It also greatly influences your ability to maintain a healthy bone structure, reduce inflammation, and promote cell growth.

Commonly referred to as the “Sunshine Vitamin,” Vitamin D is fat-soluble and is stored in the fatty tissues of the body, which is then released when not in direct sunlight. We typically get 50-90% of our Vitamin D from the sunlight itself, with the remainder coming from our diet, where it is mostly found within fatty fishes (sardines, salmon, mackerel etc.), egg yolks, and fortified dairy products.

Vitamin D deficiency is also believed to contribute to serious illnesses like:

  • Cardiovascular Disease
  • Many Different Types of Cancer
  • Diabetes
  • Dementia
  • Alzheimer’s
  • Erectile Dysfunction
  • Infertility
  • Parkinson’s Disease
  • Multiple Sclerosis
  • Osteoporosis
  • Osteoarthritis
  • Rheumatoid Arthritis
  • Psoriasis
  • A Variety of Autoimmune Diseases
  • Fibromyalgia
  • Periodontal Disease
  • Schizophrenia

Some Symptoms of Vitamin D Deficiency

Vitamin D is widely known to be essential for strong bones as it helps the body use calcium, but if you are deficient, there are a wide variety of other symptoms one can experience:

  • Fatigue
  • Depression
  • Weakness
  • Joint Pain
  • Muscle Pain

Your results will contain your personal level of vitamin D and whether it is low, normal, or high as compared to someone who shares a similar demographic profile as you (age, gender, etc.).

If your results indicate that you may have a Vitamin D deficiency, we can provide guidance and general recommendations to improve your levels. We might also suggest other lifestyle changes that are often helpful in getting your body’s levels within the recommended range.

Vitamin D Deficiency

Low vitamin D levels can result in vitamin D deficiency. Vitamin D deficiency can lead to symptoms like fatigue, depression, and joint pain—and more. In addition, a low vitamin D level may also be linked to serious health conditions like heart disease and bone weakness (in the form of osteomalacia).

The main cause of vitamin D deficiency is a lack of sun exposure. That’s because your body makes vitamin D when your skin comes into contact with sunlight. Dietary sources of vitamin D are few and far between, so sunlight is actually the body’s main source of vitamin D. Fortunately, an at-home vitamin deficiency test that checks vitamin D levels can help you find out if you’re getting enough of this key nutrient.

Risk factors for vitamin D deficiency include the following:

  • History of gastric bypass surgery
  • Dairy allergies
  • Lactose intolerance
  • Vegan or ovo-vegetarian diets
  • Fat malabsorption conditions, such as celiac disease, ulcerative colitis, and Crohn's disease

Healthcare providers often prescribe a high-dose vitamin D dietary supplement to help reverse vitamin D deficiencies as quickly as possible. (However, because too much vitamin D supplementation can result in toxicity, be sure you talk to your healthcare provider before taking high doses of vitamin D.)

Learn more about vitamin D deficiency:

Vitamin D Deficiency Symptoms

Vitamin D Toxicity

Too much vitamin D supplementation can result in vitamin D toxicity—meaning your body doesn’t have optimal vitamin D levels because it’s actually getting too much vitamin D. Toxicity is the opposite of a vitamin D deficiency.

Fortunately, frequent exposure to sunlight will not lead to vitamin D toxicity because sunlight breaks down any extra vitamin D in your skin.

Common symptoms of vitamin D toxicity include:

  • Kidney stones
  • Anorexia
  • Diarrhea, constipation, nausea, and vomiting
  • Bone pain
  • Frequent urination
  • Drowsiness
  • Constant headaches
  • Irregular heartbeat

How does the Everlywell at-home vitamin D blood test work?

The Everlywell Vitamin D Test is an easy way to check your vitamin D level. Here’s how it works:

(1) Once you order the Vitamin D Test kit (do that by clicking the green “Order” button on this page), we’ll ship it directly to you.

(2) Register your test online at using the unique kit ID that’s included in your kit.

(3) To take this blood test, use the card inside the kit to collect your blood sample. The kit includes a lancet for pricking your finger and simple instructions to guide you through the process.

(4) Once you’ve completed collection, ship your sample to a lab using the prepaid shipping label in the kit.

(5) In just days, your test results will be available to you on our secure, online platform.

What is vitamin D3 testing?

Vitamin D exists in the body in several different forms, one of which is 25(OH)D—or vitamin D3. Vitamin D3 tests (like the Everlywell vitamin test kit) measure the D3 form of vitamin D because this is generally the best way to determine the body’s vitamin D status.

What’s the normal range for vitamin D levels?

Medical and scientific experts have determined the approximate range for adequate or normal vitamin D levels:

  • A vitamin D level less than about 30 nanograms/milliliter (ng/mL) is considered inadequate by the Endocrine Society.
  • On the other end of the range, a vitamin D level above 100 ng/mL is often viewed as too high. That’s because vitamin D levels higher than 100 ng/mL increase the risk of hypercalcemia (“hypercalcemia” refers to too much calcium in the blood, which can lead to kidney stones, weak bones, and more).
  • It’s important to keep in mind, however, that optimal vitamin D levels vary from person to person (depending on the health conditions someone has, for example)—so it’s a good idea to share vitamin D test results with your healthcare provider.

What will my vitamin D test result tell me?

Your vitamin D test result will tell you how high or how low your vitamin D level is, reported in nanograms per milliliter (ng/mL). You’ll also get practical suggestions—including ideas for maintaining healthy vitamin D levels—that can help you get the most out of your results.

Why is vitamin D testing (or “vit D testing”) important?

Vitamin D blood tests measure your blood’s concentration of vitamin D and can help you detect a deficiency in this important vitamin. Vitamin D testing also lets you see if you’re getting too much of the “sunshine vitamin” through over-supplementation. (It’s possible to have elevated levels if you use vitamin D supplementation and/or eat fortified foods that have vitamin D.)