4U Health At Home Vitamin D Test Kit Product Box

Vitamin D Test

At-Home Vitamin D Test Kit

Check Your Levels Quickly, Easily and Affordably

Vitamin D Comprehensive Test

(3 customer reviews)


Free Shipping, FSA/HSA Credit Card Payments Accepted

SKU: 4UKIT274 Category:


Our vitamin D kit offers the most complete at-home test to quantify vitamin D2, vitamin D3 & total vitamin D 25-hydroxy levels. Measure concentrations to rule out deficiency and confirm adequate supply levels to maintain optimal health and well-being.

  • Measures D2, D3, & Total Vitamin D 25-Hydroxy levels
  • Simple at-home finger prick collection
  • Available for ages 2+

4U Health Vitamin D Comprehensive Test Kit

Measures 3 Types of Vitamin D 
4U Health’s Vitamin D test quantifies Vitamin D2 and D3 along with Total Vitamin D 25-hydroxy.

  • Vitamin D2
  • Ingested into the body. D2 is present in some fortified foods (milk, eggs, and bread products), fatty fish (such as mackerel, salmon, or sardines) & supplements.
  • Vitamin D3
  • Produced by skin exposure to the sun. D3 is also available as a supplement.
  • Total Vitamin D 25-Hydroxy
  • The total concentration of Vitamin D 25-Hydroxy (D2+D3) is used to estimate the reserve of Vitamin D in the body.

Screen for low levels of Vitamin D so you can treat it with supplements before it causes health problems

Vitamin D is a cornerstone of good health. Unfortunately, about 42% of the US population is considered deficient in Vitamin D. But wait, there’s more. Vitamin D isn’t just critical for adults, but especially children. About 1 in 10 kids in the US are also deficient in Vitamin D, and as many as 60% could have “suboptimal levels.”

From the comfort of home, you can easily screen and monitor the body’s level of Vitamin D. This at-home lab test classifies your Total Vitamin D into one of four categories – target optimum supply levels to maintain abundant energy, vitality and well-being.

4U Health Vitamin D Level Chart

Easily collect a finger prick sample from the comfort and privacy of your own home

Your Vitamin D test kit includes everything required for your tiny blood drop sample. We provide detailed instructions and a prepaid shipping label to return your sample to the lab.

Parents, we’ve got you covered – test any child 2 years and older. Finger prick collection is easy and painless; it’s how most hospitals collect blood from newborns.

4U Health At-Home Vitamin D Test Kit Contents

Our tests bring hospital-grade results to your home

Once we receive your test, we’ll send your physician-reviewed results in approximately 2-5 days.  4U Health at-home test reports are both accurate and easy to read. Feel free to use your results to understand if you’re maintaining an adequate level of this important vitamin or share your report with your doctor to develop an appropriate treatment plan.

4U Health Happy Client Viewing At Home Lab Test Digital Results

Digital Results

Usually within 2 to 5 days of your sample arriving at the lab, receive secure electronic results on your device of choice

4U Health At Home Vitamin D Test Total 25-Hydroxy Digital Result


Simple to understand results designed to measure your Vitamin D levels comprehensively.


Your individualized report shows your Vitamin D2, D3, and Total Vitamin D 25-hydroxy levels.

Useful Results

Our hospital-grade results help you consider adding Vitamin D supplements to your daily routine. In addition, share your results with your doctor or nutritionist for additional guidance and treatment options.

How It Works

Order Your 4U Health Self Collection At Home Lab Test Kit

Step 1

Order Your Test

Order online with express delivery. In 1 to 2 days your kit will arrive in plain packaging, ensuring a confidential testing experience.

Step 2

Collect Your Sample

Your kit contains everything you need to test from home. Simply collect your sample using the at-home testing kit and instructions. Then return free of charge to the lab with the provided prepaid shipping label.

Receive Your At Home Lab Test Results

Step 3

Fast, Accurate Results

Typically you will receive electronic results within 2-5 days after receipt by the lab. Have complete trust in your lab report’s accuracy, as all 4U Health testing kits provide hospital-grade certified results.

Get Physician Support For Your 4U Health Self Collection At Home Test

Step 4

Get Physician Support

We’ve got you covered! A licensed physician orders your test and reviews your results. When medically necessary, our clinicians provide post-testing support to help you maximize our laboratory services.

Frequently Asked Questions

What’s included in the at-home self-collection Vitamin D test kit?

You’ll receive everything you need in order to self-collect your test specimen!

  • Pre-paid shipping both ways
  • Easy to follow instructions
  • An at-home blood drop collection kit (via an easy finger prick)
  • Return protective envelope to mail sample to the lab for testing
  • Electronic passcode protected results available from your phone or computer
  • Printable report to share with your doctor
  • Help along the way if you need it

What is Vitamin D?

Let’s learn some science! Vitamin D is a fat-soluble vitamin that helps absorb calcium and phosphorous minerals. This characteristic plays a vital role in forming and maintaining strong bones and teeth, regulating normal immune system function, maintaining heart and lung health, and combating depression and other diseases. While produced by exposure to the sun, natural and fortified foods also contain Vitamin D.

Vitamin D is a nutrient your body needs for building and maintaining healthy bones. That’s because your body can only absorb calcium, the primary component of bone when Vitamin D is present. Vitamin D also regulates many other cellular functions in your body. Its anti-inflammatory, antioxidant, and neuroprotective properties support immune health, muscle function, and brain cell activity.

Some foods containing Vitamin D include fortified milk, fortified cereal, and fatty fish such as salmon, mackerel, and sardines. Your body also makes Vitamin D when direct sunlight converts a chemical in your skin into an active form of the vitamin (calciferol).

The amount of vitamin D your skin makes depends on many factors, including the season, latitude, and skin pigmentation. Depending on where you live and your lifestyle, Vitamin D production might decrease or be completely absent during the winter months. Sunscreen, while helpful in preventing skin cancer, also can reduce Vitamin D production.

What will my test results show me?

Your results will tell you the concentrations of Vitamin D2 (found in some foods & supplements), D3 (derived from solar radiation & supplements), and Total 25-Hydroxy vitamin D (the sum of D2 + D3).

The reference ranges for your Vitamin D 25-Hydroxy test is quantified and categorized as the following:

  • Deficient: (< 15 ng/mL)
  • Insufficient: (15 to < 23 ng/mL)
  • Optimum: (23 to 75 ng/mL)
  • Potential Toxicity: (> 75 ng/mL)

Please note: The above reference ranges are for guidance only and are not a diagnosis. Although a result above 75 is typically considered elevated, multiple studies show Vitamin D toxicity is rare and usually only presents with a level greater than 125 ng/mL. Every patient has a unique medical history and symptoms. You should talk to your physician if your Vitamin D test results indicate a deficiency or elevation to determine your optimum Vitamin D concentration.

Click Here to View a Vitamin D Sample Report

Who should not take this test?

4U Health’s at-home Vitamin D Test is designed for individuals to measure concentrations to rule out deficiency and confirm adequate supply levels to maintain optimal health and well-being.

  • This test is not intended for the following individuals:
  • Specimens collected in New York State: This test is not available for patient self-collection in NY.
  • Children under 2-years-old: The test taker must be 2+ years old.

What are common symptoms of Vitamin D deficiency?

Vitamin D helps keep your body healthy and strong. If you have too much or too little, you may experience some of the following adverse symptoms:

  • Head
  • Anxiety
  • Depression
  • Hair loss / thinning
  • Body
  • Bone and back pain
  • Bone loss / bone fractures
  • Chronic whole-body pain
  • Fatigue and tiredness
  • Frequent illness or infections
  • Impaired wound healing
  • Joint pain
  • Muscle pain
  • Weight gain

Can I buy now and use this test later?

Test now or within one year of purchase. This kit has a guaranteed expiration date of at least 12 months. That’s great news if you are buying more than one test to recheck yourself in the future or gifting to a friend or family member for later use.

Can I gift this test to a friend or family member?

All 4U Health tests are eligible for gifting. In fact, they make great presents. The recipient who receives your gift will simply open the kit, register it, and follow the collection instructions. Within a few days of sending to the lab, your friend or family member will receive secure electronic HIPAA compliant results all thanks to your generosity.

Where is my lab test performed?

4U Health tests meet national standards and are as accurate as services provided in a doctor’s office or hospital. We only work with the highest quality CLIA certified laboratories and health experts. All testing complies with state and federal regulations. And our clinicians provide medical oversight throughout the entire process.

Will my Vitamin D Self-Collection Test be covered by insurance?

Pay upfront and receive no surprise medical bills. 4U Health is not enrolled in Medicare or any other private insurance network. This test is not eligible for Medicare or any other federal or state-funded insurance program reimbursement.

That’s great news if you want to test more than once a year, as many insurance programs limit your frequency to vitamin D testing.

How is my privacy protected?

Rest assured; HIPAA web security protocols protect your data along every step of the way to finding out your Vitamin D level. Keeping your personal data secure is important to us. We only share your information where required to deliver our products and services or where we have a legal basis to do so. Your results are securely protected and available for review online; always secure but easily accessible only to you.

Can you provide links to technical documentation?

How do I view this test’s collection instructions?
Finger Prick Dried Blood Spot (DBS) Collection Instructions

How do I view the National Institute of Health’s Vitamin D fact sheet for consumers?
NIH’s Fact Sheet for Consumers

How do I view the National Institute of Health’s Vitamin D fact sheet for health professionals?
FDA Fact Sheet for Health Professionals

Where can I find additional research information about Vitamin D as it relates to COVID-19?
Evidence that Vitamin D Supplementation Could Reduce Risk of Influenza and COVID-19 Infections

Still have questions about the test?

So you still have unanswered questions. No worries, we’d love to hear from you. Reach us by e-mail, phone or chat and we will do our best to provide answers so you can determine if this is the best test for you or your child.

3 reviews for Vitamin D Comprehensive Test

  1. Jack – Darien, CT

    It’s very easy to order this test online, and no prescription from a doctor is required. I recommend this test to anyone who wants to track their vitamin D levels like me in between their yearly doctor appointments.

  2. Bridget – Ockeechobee, FL

    So good to finally know my Vitamin D3 level. This home vitamin D test provides an easy-to-understand report that shows if your level is too low, optimum or too high. I recommend this test and 4U Health.

  3. Cara – Chicago, IL

    I like to test my vitamin d levels every six months; in the dead of winter vs peak of summer to account for changes in my sun intake. With a one-year expiration date guaranteed, I bought 2 vitamin d kits for the multi-unit discount to do just that.

Add a review

Your email address will not be published. Required fields are marked *