Correlation of vitamin D levels with serum parameters in Covid-19 patients

It is well-established that vitamins have many beneficial roles and protect humans against inflammatory diseases. Vitamin D, a lipid-soluble vitamin, plays a crucial role in viral infections. Therefore, this study aimed to investigate if serum 25(OH)D levels affect morbidity, mortality, and levels of inflammatory parameters in COVID-19 patients. 140 COVID-19 patients participated in this study (65 outpatients and 75 inpatients). Their blood samples were collected to determine TNFα, IL-6, D-dimer, zinc, Ca2+, and 25(OH)D levels. Patients with O2 saturation 93% received routine treatment and were discharged (Outpatient group). The serum levels of 25(OH)D in the inpatient group were significantly lower than those in the outpatient group (p