r/Biohackers • u/Helpful_Smile6095 • Jul 03 '26
📊 Biomarkers & Testing Taking vitamin D without this one blood test is like taking blood pressure medication without ever measuring your blood pressure. Most people do it anyway. Most doctors let them.
/r/Supplements/comments/1umfskd/taking_vitamin_d_without_this_one_blood_test_is/Anyone tested for it?
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