Short Answer: Vaccination shouldn't change the vitamin D requirement. Quarterly testing makes sense for someone who has never tested before or who wants to make sure they stay in range during COVID, but generally testing yearly around the mid-point of seasonality for you, once you know your variation, is plenty.

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Chris Masterjohn, PhD, is the Founder and Scientific Director of the mitochondria test Mitome.

Vitamin D supplements, testing, and interactions with the vaccine. | Masterjohn Q&A Files #293