Additionally, among the most common long-term complications observed in long COVID patients are autoimmune coagulopathies, such as thrombocytopenia and microclotting targeting a range of host antigens, including cardiolipin (CL), platelet factor 4 (PF4), beta 2 glycoprotein I (β2GPI), various clotting factors, collagens, phosphatases and phospholipids [29,30,31,32]. Here, PF4 is linked to Thrombocytopenia.