Some laboratory findings linked to an inflammatory profile have also been found to increase the risk for PASC, such as a significant decrease in total lymphocyte counts—especially CD4+ T cells and CD8+ T cells—and an increase in LDH, CRP and IL-6 levels, as well as IL-1β, IL-6, TNF and IP10 [5,51,57,58,59,60], mostly in patients who required hospitalization. This evidence concerns the gene IL6 and long COVID-19.