https://www.selleckchem.com/pr....oducts/pluripotin-sc
Vitamin D treatment has been found to decrease the incidence of viral respiratory tract infection, especially in patients with vitamin D deficiency. Whether vitamin D is associated with coronavirus disease 2019 (COVID-19) incidence is unknown. To examine whether the last vitamin D status before COVID-19 testing is associated with COVID-19 test results. This retrospective cohort study at an urban academic medical center included patients with a 25-hydroxycholecalciferol or 1,25-dihydroxycholecalciferol level measured within 1 year