4-T Score for the Likelihood of Heparin Induced Thrombocytopenia - Thrombocytopenia - Compare the highest platelet count within the sequence of declining counts to the lowest. - Timing (of platelet fall or thrombosis) - Thrombosis - Other potential cause of Thrombocytopenia 0 to 3 points: Low probability (risk of HIT <1 percent) 4 to 5 points: Intermediate probability (risk of HIT ~14%) 6 to 8 points: High probability (risk of HIT ~68%) #4TScore #HIT #Heparin #Induced #Thrombocytopenia #Likelihood #Diagnosis #Hematology
