Fig. 2.

Longitudinal dynamics of the urinary trace elements in severe COVID-19 patients according to the different disease outcome (deceased or recovered). Urinary creatinine-adjusted levels of the nine trace elements were estimated longitudinally by using the results only from severe COVID-19 patients according to the weeks of post-symptoms onset to specimen collection. The mean values were delineated on weeks of disease onset. Data are shown as mean ± SD. Abbreviations: Cr, chromium; Mn, manganese; Cu, copper; As, arsenic; Se, selenium; Cd, cadmium; Hg, mercury; Tl, thallium; Pb, lead.