ALB and acute respiratory distress syndrome: However, the molecular mass of the convalescent plasma HSA in the patients, who were recovering from ARDS as a result of SARS-CoV-2, was statistically significantly larger than total HSA found in HCWs who had recovered from SARS-CoV-2 infection with only mild symptoms: Mean difference Δ50 m/z, +0.08% change in mass, p = 0.00758).