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Nutrition

Vitamin D Check

Over 30% of adults are estimated to be vitamin D deficient which can cause muscle weakness and fatigue. This simple vitamin D test will tell you if you have a deficiency.

See what is measured

About this test

Over 30% of adults are estimated to be vitamin D deficient, which can cause muscle weakness and fatigue. This simple vitamin D test will tell you if you have a deficiency. Vitamin D is crucial for absorbing calcium and phosphate, maintaining strong bones and muscles, and protecting against diseases like cancer and immune disorders. The primary source of vitamin D is sunlight, with food alone rarely providing adequate levels. Deficiency is common in New Zealanders due to factors like sunscreen use, insufficient outdoor time, and rising obesity. While deficiency may be asymptomatic, potential symptoms include brain fog, muscle weakness, unexplained fatigue, bone pain, and frequent bone fractures. Low vitamin D levels are also linked to seasonal depression, impaired immune function, insulin resistance, increased cardiovascular disease risk, and evidence suggests it is protective against various forms of cancer.

What we measure

Vitamin D Status

Vitamin D helps your body absorb the calcium and phosphate it needs to keep your bones and muscles strong and healthy, and provides protection for many diseases.

25-HYDROXYVITAMIN D
Although called a vitamin, vitamin D (25-OHD) is actually a steroid hormone which is activated by sunshine on the skin. It is essential for bone strength as it helps the intestines absorb calcium. Calcium and vitamin D play a critical role in developing and maintaining your overall bone health, and when you don’t get enough you increase your risk of developing osteoporosis and the incidence of stress fractures.

What happens next

  1. 01

    Order your test

    Enter your laboratory details and pay securely as a guest. No signup or health quiz is required to order.

  2. 02

    Follow your collection instructions

    Preparation and collection vary by test. Follow the instructions provided for your specific test; contact us if anything is unclear.

  3. 03

    Explore your results

    View your results privately in your account. You can take the health quiz after ordering and explore clinician support when you need it.

A question before you order?

You can explore the collection without taking the quiz. If you are unsure where to start, we can help you understand the options.