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Information on the latest vitamin D news and research.

Find out more information on deficiency, supplementation, sun exposure, and how vitamin D relates to your health.

Hi there – regarding the home blood spot tests for Vitamin D levels on this website (from Heartland Assays), are they 25(OH)D tests? Also, is it better to have blood drawn at a clinic to more accurately assess Vitamin D level? Many thanks

Ask the Vitamin D Council

Asked by  peggy_beth@hotmail.com on January 30, 2015

  • Will Hunter
     Will Hunter on

    Hi Peggy,

    Yes, these in-home test kits do measure 25(OH)D levels.

    Past research illustrates that the accuracy of a blood spot test and getting blood drawn at a clinic are similar. The main difference of our test kits is that you do not need to take a large blood sample and you can complete it and view your results all from home.


    Answered by  Will Hunter on