Viana-Llamas et al. reported that in COVID-19 patients, serum albumin concentration media at the moment of hospital admission was 34.4 ± 4.0 g/L, and in deceased patients 32.3 ± 4.1 g/L48, which is concordant to the results reported in this research once the second derivate analysis of the bands associated to albumin showed a decrement in the COVID-19 group. Here, ALB is linked to COVID-19.