COVID 19 is a current worldwide pandemic caused by severe acute respiratory syndrome coronavirus 2 "SARS-CoV-2". Hypovitaminosis D and hypocalcaemia have been reported to be associated with COVID 19 infection, they are considered good biomarkers of clinical severity of COVID 19. Poor prognosis related to hypocalcemia is increased in elderly patients.
Fibroblast growth factor 23 and sclerostin are secreted from the bone, they decrease active vitamin D levels. Their levels and their relation to calcium levels in COVID-19 patients will be detected.
