Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
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Vitamin D Blood Test

Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
Vitamin D Blood Test - welzo
The_Daily_Mirror_logo - welzo
Healthline_logo.svg_1 - welzo
metro_1 - welzo

Sale price £29.00
Save 26% Regular price £39.00
40 Reviews

A Vitamin D Blood Test is used to measure the levels of Vitamin D in your blood. If the test indicates a vitamin D deficiency, medication and supplements are available.

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The UK's Highest Rated Home Testing Provider

Online Influencer
Joanna Charice reviewed
"After using the Welzo Tiredness & Fatigue Blood Test due to ongoing tiredness, I found the testing process simple and the results came quickly. They revealed low iron levels. With this knowledge, I adjusted my diet and started iron supplements, which markedly improved my energy. This test was a key part in addressing my fatigue."
Assistant Athletic Trainer
Jordan Waits reviewed
"I simply ordered the test online, received it in the mail a few days later, and took the test in the comfort of my own home using a quick finger prick. The instructions were clear and easy to follow, and the process itself was quick and painless."
Health & Life Coach
Roxy Richards reviewed
"I followed the recommendations provided by Welzo, and I have to say, I feel so much healthier now. I have a lot more energy, and I just feel better overall. It's amazing how much of a difference small changes can make"
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Mimi Reviews reviewed
"The Welzo Female Hormone Test was a quick and effective way to shed light on my irregular periods. The results were clear and led to actionable insights, improving my discussions with my healthcare provider. Overall, a very positive experience."
  • Biomarkers
  • Information

Vitamin D

Vitamin D is a vitamin that's essential for many functions in your body, including bone and muscle health. Vitamin D can be found in food, supplements, and fortified foods. If you don't get enough vitamin D, you may develop osteoporosis or muscle weakness. An average vitamin D level is 20 to 50 ng/mL. If you have a low vitamin D level, we may recommend that you take a vitamin D supplement or eat foods fortified with vitamin D.

Symptoms of a Vitamin D Deficiency

Vitamin D deficiency is one of the most common deficiencies faced by the UK population. This is due to a lack of sun exposure. As many people work indoors, they fail to reach their minimum vitamin D dosage requirements, which can lead to a whole host of complications and health issues.  

If you think you might be deficient in vitamin D, then take our advanced Vitamin D test to find out the very next day. Vitamin D supplements are available in many different forms, including tablets, capsules and liquids. To find our list of vitamin D supplements click here.

Symptoms of a vitamin D deficiency:

  • Fatigue and a general feeling of being tired all the time
  • Muscle weakness
  • Impaired muscle growth (especially among athletes)
  • Impaired bone density
  • Osteoporosis
  • Bone pain

Additional Information

Vitamin D is a vital nutrient that helps the body absorb calcium and phosphorus, which are essential for strong bones and teeth. A lack of vitamin D can lead to bone loss and an increased risk of fractures. Vitamin D also plays an important role in maintaining a healthy immune system.

A vitamin D blood test is a common way to measure how much vitamin D is in your blood. It's used to help diagnose and monitor vitamin D deficiencies. The test measures the level of 25-hydroxyvitamin D (25OHD) in your blood. This is the most accurate measure of your vitamin D levels.

A vitamin D blood test is usually recommended if you have:

- Symptoms of a vitamin D deficiency, such as muscle weakness and pain, low levels of calcium in the blood, or frequent infections

- Dark skin and live in a region with low sunlight exposure year-round

- A medical condition that increases your risk of vitamin D deficiency, such as Crohn's disease or celiac disease

- Been taking medication that can lower your vitamin D levels, such as thiazide diuretics or corticosteroids

Your doctor may also recommend a vitamin D blood test if you're being treated for a vitamin D deficiency. This can help ensure that your treatment is working.

The results of a vitamin D blood test are reported as nanomoles per liter (nmol/L). The normal range is 30 to 74 nmol/L. A level of 20 ng/mL or lower is considered a vitamin D deficiency.

If your vitamin D levels are low, your doctor may recommend taking a supplement or getting more sunlight exposure. They may also recommend further testing to look for other causes of your symptoms.

Vitamin D is an important nutrient that helps keep your bones strong and your immune system healthy. A simple blood test can check your vitamin D levels and help ensure you're getting enough of this important nutrient.

Many people do not get enough vitamin D from their diet, and as a result, may be at risk for deficiency. The best way to ensure adequate vitamin D intake is to get regular exposure to sunlight. However, people who do not have access to sunlight or who have dark skin pigmentation may need to take a supplement to meet their needs. Talk to your doctor about whether you should take a supplement.

Some foods that are high in vitamin D include fatty fish, such as salmon and tuna, fortified milk, orange juice, and cereals. If you are concerned about whether you are getting enough vitamin D, ask your doctor to test your blood level.

Statistics on Vitamin D Deficiency in the UK

Due to the sedentary lifestyle that most Britons lead, with jobs indoors and little activity spent outside, vitamin D deficiency is on the rise. Low vitamin D levels have been linked to illnesses such as cancer. Therefore, it is imperative to check your vitamin D levels and take action if they are on the lower side of the spectrum.

Of adults have a vitamin D deficiency
The UK Governments National Diet and Nutrition survey has found that 1 in 6 adults in the UK have low vitamin D levels, with the number steadily rising. This is in line with our Welzo lab data, with over 25% of tests showing low vitamin D levels.
Of adults are unaware of the UK Governments recommendation to supplement with vitamin D
The UK Government recommends that all adults should supplement with vitamin D. However, close to half of the population is unaware of this advise.

Experts Opinion on Vitamin D Home Tests

"We use this test to check your vitamin D levels to see whether you need to top up or maintain what you’re doing if it's adequate. This test can also be used to ensure your levels aren't too high, as vitamin D can cause toxicity levels on higher intake doses."

Dr Sameer Nakedar
Experts Opinion on Vitamin D Home Tests

How to take a Vitamin D Blood Test

Collecting a blood sample for your finger prick home test is straightforward. Watch the video below for more details on how to take a home blood test.

  • how1 - welzo

    Pick your home test

    We have a wide range of tests to cover your health needs. Order with next day United Kingdom delivery and avoid sitting in a doctor's office or clinic. Use our quiz to find the right test for you.

  • how2 - welzo

    Take your test

    Activate your test and collect your sample in the morning. Return your sample on the same day, using the prepaid shipping label provided. Samples use a simple finger prick collection method that takes around 5 minutes to complete.

  • how3 - welzo

    Results within 48 hours

    You'll get verified results and insights into what the biomarkers mean. Order now to become a healthier you!

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Vitamin D Blood Test Information

Specification of Vitamin D Blood Test

  • Test name: Vitamin D Blood Test
  • Also known as & related tests: 25-hydroxyvitamin D blood test, 25(OH)D blood test, calcidiol blood test, and 25-hydroxycholecalciferol blood test
  • Biomarkers: Vitamin D
  • Test tube: SST (Gold microtainer)
  • Brand: Welzo
  • Turn around time: Approx. 24 hours
  • Lab test ranges:
  • Test Kit Marking: MHRA/UKCA
  • Location of Lab: United Kingdom

What is a Vitamin D Blood Test?

A Vitamin D Blood Test is a home health test offered by Welzo. The Vitamin D Blood Test can be taken from the comfort of your home using a finger prick sample, which is then sent back to our lab for analysis and interpretation.

What does a Vitamin D Blood Test for? 

A Vitamin D Blood Test tests for the following: Vitamin D.

What are the benefits of a Vitamin D Blood Test?

Checking your health through the use of Vitamin D Blood Test is an important way to track your health. Home testing offers the convenience of conducting health assessments in the comfort of your own home, while enabling quicker, more private results without the need for visiting a healthcare facility.

Can a GP review my Vitamin D Blood Test?

Yes, Welzo offers a GP review service for the Vitamin D Blood Test. Follow the link if you would like to have an online GP appointment with your Vitamin D Blood Test.

Are Vitamin D Blood Tests available on the NHS?

The NHS offers Vitamin D Blood Tests subject to eligibility requirements, consultations and local guidelines.

Vitamin D Blood Test Kit and Ordering

How can a Vitamin D Blood Test be ordered?

A Vitamin D Blood Test can be ordered online through Welzo's secure checkout. Select the Vitamin D Blood Test and add the patient's name and details, then checkout for next-day delivery.

What is included in the Vitamin D Blood Test test kit?

The Vitamin D Blood Test contains the following items in the test kit:

  • 1 x UN3373 Test Kit for Biological Substances Category B (test kit design may vary from images displayed online depending on the test selected.
  • 1 x Free Return Label 
  • 1 x Finger Prick Lancet / Urine Sample Pouch or Swab (depending on the test ordered)
  • 1 x Cleansing Wipe/ Alcohol Swab
  • SST (Gold microtainer)

Vitamin D Blood Test Biomarkers and Results

What biomarkers are tested for in a Vitamin D Blood Test?

The Vitamin D Blood Test checks for the following biomarkers: Vitamin D

What are the results ranges for a Vitamin D Blood Test?

Vitamin D Blood Test reference ranges vary based on age, sex, population sample and numeric test result ranges. However, once you complete your tests, you will receive clear reference ranges for your Vitamin D Blood Test.

What is a normal test range for Vitamin D Blood Test?

The Vitamin D Blood Test range will be provided on the advanced Welzo reporting panel which will factor in multiple aspects such as age, population size comparison and biological sex.

Vitamin D Blood Test Procedure and Timing

When should a Vitamin D Blood Test be taken?

It is best to take a Vitamin D Blood Test first thing in the morning.

How long does a Vitamin D Blood Test take?

The typical turnaround for a Vitamin D Blood Test is 24 hours from receipt at the Welzo laboratory, Monday to Thursday. However, results may come back faster or slower depending on how busy the Welzo laboratory is and if you have requested any biomarkers that take longer to test for. In this case, results can take up to 5 days.

Are there any special preparations required before taking the Vitamin D Blood Test (e.g., fasting)?

We will let you know via email if there are any special requirements for the Vitamin D Blood Test. However, typically we recommend you take a Vitamin D Blood Test first thing in the morning, fasted.

What is the best time to post my Vitamin D Blood Test?

The best time to return your Vitamin D Blood Test sample is Monday to Thursday, before 14:00 to ensure the product arrives at our lab on time for same-day analysis.

What sample is required for a Vitamin D Blood Test?

The Vitamin D Blood Test requires a capillary blood sample using a SST (Gold microtainer) that is collected from a finger-prick blood sample.

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Customer Reviews

Based on 8 reviews
Great test, fast delivery and results

Great test, received quickly in the post, returned and results back within the day.

Sally Wiltshire
Easy to use test, clear precise results

Quick delivery, test easy to use, sent off same day recieved results 2 days later. Clear precise results. Would recommend.

Robert Guest
Vit D test

Clear instructions. Straightforward to perform, packag up and post.

Adrianna Jenkins

The Vitamin-D Blood Test kit is an absolute game-changer. It's incredibly easy to use and the instructions are clear and concise. I got my results quickly and they were easy to understand. This home health test has made monitoring my Vitamin D levels convenient and stress-free. Highly recommend!

Isabela Mays

The Vitamin-D Blood Test kit is user-friendly with clear instructions. It provided accurate results quickly, making it a convenient option for home use. However, the lancet was slightly painful. Overall, it's a reliable kit for those needing regular Vitamin-D level checks.