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BloedCheckup logoBloedCheckup
  • Our tests

    Pick the blood test or package that matches your needs.

    All blood tests

    Browse every category and focus area in one overview.

    Value bundles

    Comprehensive combos curated for common health goals.

    STD Test Guide

    Find out which STD test is right for you.

    Fingerstick at home

    See all fingerstick kits you can collect and return from home.

    Urine tests

    Find urine analyses with prepaid return packaging.

    Saliva tests

    View all saliva tests.

    Stool tests

    View all stool tests.

    Custom test request

    Request a bespoke panel built around your personal needs.

  • Service & process

    Everything around ordering, collection and logistics.

    How it works

    See each step from order to results in a clear timeline.

    Locations

    Find one of 1,000+ professional blood draw locations.

    Laboratories

    Discover our ISO-certified lab partners and quality controls.

    Fasting guidance

    Check when you need to fast and how to prepare properly.

    Shipping

    Instructions for sending your sample safely to the lab.

    FAQ

    Quick answers to popular questions about ordering and testing.

  • Support & contact

    Personal advice, reviews and legal information.

    Contact

    Call or email our team for direct assistance.

    Customer reviews

    Read real experiences from customers just like you.

    Custom test request

    Request a bespoke panel built around your personal needs.

    About BloedCheckup

    Meet our team and learn about our mission.

    Returns policy

    Learn how cancelling, refunds and shipping costs work.

    Medical disclaimer

    Important medical and usage information.

    Privacy policy

    Understand how we protect and process your data.

    Terms & conditions

    Read the legal terms for our services.

  1. Home
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  3. Vitamine d3
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Vitamin D3 - VitamineD325-OH
Vitamin D3 - VitamineD325-OH
Test kit

Blood collection at collection point

  • After your order you receive instructions by email
  • Make an appointment at a collection point near you
  • Blood collection at 1,000+ locations across the Netherlands

Blood collection at collection point

  • After your order you receive instructions by email
  • Make an appointment at a collection point near you
  • Blood collection at 1,000+ locations across the Netherlands
  • Receive your results digitally by email

What is Vitamin D3?

Vitamin D3, also known as cholecalciferol, is an essential vitamin that helps the body absorb calcium and phosphorus, which is crucial for building and maintaining strong bones. Our body produces vitamin D3 when our skin is exposed to sunlight, but it can also be obtained through diet or supplements.

Why get Vitamin D3 tested?

Testing vitamin D3 is useful to determine if you have sufficient vitamin D in your body for good bone and immune system health. It is especially important in areas with low sunlight, for older adults, for people with darker skin, or for people who spend little time outdoors due to health reasons.

What does it indicate?

The test indicates the amount of vitamin D3 in the blood. An adequate level suggests that the body has enough vitamin D for the maintenance of bone health and a well-functioning immune system.

What does a high Vitamin D3 level mean?

A high level of vitamin D3 may indicate excessive vitamin D supplementation. Although rare, this can lead to hypercalcemia, a condition where there is too much calcium in the blood, which can cause various health issues, such as kidney stones or bone pain.

What does a low Vitamin D3 level mean?

A low level of vitamin D3 indicates a deficiency, which can lead to bone weakness, osteoporosis, and an increased risk of fractures. In children, a severe deficiency can cause rickets, a condition that leads to skeletal deformities.

Have questions?

Check our frequently asked questions or contact us.

Receive your results digitally by email
See how it works →

Vitamin D3

25-OH-D3; bone and immune system.

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€31.95EUR

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How it works

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Laboratories

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Vitamin D3 - VitamineD325-OH
Vitamin D3 - VitamineD325-OH
Test kit