In this case, the patient’s initial hemoglobin was 54.0 g/L, platelets were 4.0 × 109/L, fragmented red blood cells were 3%, reticulated red blood cells percentage was 17.51%, and the patient had positive inhibitory antibodies to ADAMTS13 with an ADAMTS13 activity level of 2.15%, thus confirming the diagnosis of TTP. Here, ADAMTS13 is linked to thrombotic thrombocytopenic purpura.