Share this postVitamin D Testing Should Be A Prioritymathewaldred.substack.comCopy linkFacebookEmailNoteOtherVitamin D Testing Should Be A PriorityBillions Spent on Covid Tests, and Nothing On Vitamin D TestsMathew AldredDec 03, 2022∙ Paid14Share this postVitamin D Testing Should Be A Prioritymathewaldred.substack.comCopy linkFacebookEmailNoteOther1ShareThis post is for paid subscribersAlready a paid subscriber? Sign in