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A member asked:
Are blood spot samples less accurate compared to lab drawn samples for vitamin d?
A doctor has provided 1 answer
My guess is yes but recommend you go to pubmed.gov and search for Vit D AND test accuracy in exactly that search line. You will then be able to get the real answer based on your assessment of the data comparing the many methods use to measure "Vitamin D".
Answered 10/31/2021
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