ALB and COVID-19: Comparing moderate and severe COVID-19 regression model presented 1.123 times decreased SpO2 (admission) odds ratio (p < 0.001), 0.051 times decreased lymphocytes (admission) odds ratio (p = 0.160), 0.004 times decreased QPT (admission) odds ratio (p = 0.882), 0.050 times albumin (admission) odds ratio (p = 0.237).