• Vitamin D Test (25 - OH) - The National Blood Test Clinic
  • Vitamin D Home Test UK - The National Blood Test Clinic
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Vitamin D Test (25-OH) | Lab Test Vitamin D

Vitamin D Test (25-OH) | Lab Test Vitamin D

£227.00 GBP
£227.00 GBP
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VITD

Low vitamin D can cause fatigue, weakened bones, muscle pain, and frequent illness. The Vitamin D Test (25-OH) measures your body’s vitamin D reserves, helping detect deficiency or insufficiency. If you’re experiencing consistent fatigue, joint pain, or muscle weakness a lab test for Vitamin D can provide you with valuable insights.

Why the Vitamin D Testing Matters?

Vitamin D plays a crucial role in calcium absorption, maintaining bone density, supporting the immune system, and regulating mood. Modern lifestyles, limited sun exposure, and poor diet often contribute to deficiency. A vitamin D deficiency test helps identify low levels early, allowing timely intervention with diet, supplements, or lifestyle changes.

What Gets Assessed?

  • Vitamin D (25-OH) levels in the bloodstream

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How Our Test Works

  • Book Your Appointment Via The National Blood Test Clinic

    Place Your Order

    Place your order online and receive a test kit delivered to your home. You’ll need to bring this kit with you to your scheduled appointment at one of our partner blood collection clinics.

  • Blood Draw for Health Screening

    Attend Your Appointment

    At your chosen clinic, a trained nurse or phlebotomist will collect your blood sample using the kit you bring. If a sample collection courier is not available at the site, you’ll be asked to take the sealed sample with you and post it using the prepaid packaging provided.

  • Test to Check Vitamin D Deficiency

    Receive Your Results

    Once your results are ready, you’ll receive an email notification to log in and view them securely via your private portal. Please note: venous blood test results are not automatically reviewed by a doctor. We recommend booking a consultation with a qualified clinician to help you interpret and understand your results fully.

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FAQs

What does this test measure?

It measures the total 25-hydroxyvitamin D in the blood, which is the most reliable marker of your body’s vitamin D status.

Who should take this test?

Anyone experiencing fatigue, bone or muscle pain, frequent infections, low mood, or those with little sun exposure may benefit from this test.

How is the test done?

A small blood sample is collected from a vein and analysed in a UKAS-accredited laboratory for accurate results.

What causes vitamin D deficiency?

Deficiency often results from limited sunlight, poor diet, darker skin tone, obesity, or underlying health conditions affecting absorption.

Can the deficiency be corrected quickly?

Yes, with vitamin D supplements, dietary changes, and sensible sun exposure, levels typically improve within a few weeks to months.