Laboratory testing for suspected COVID-19 vaccine-induced (immune) thrombotic thrombocytopenia – PubMed

In summary, testing typically comprises platelet counts, D-dimer, fibrinogen, and various immunological and functional assays for platelet factor 4 (PF4) antibodies.

Laboratory testing for suspected COVID-19 vaccine-induced (immune) thrombotic thrombocytopenia – PubMed