
Keywords: بالا; 4 T's; The 4 T's score for the estimation of clinical pretest probability; LRÂ +; Â Positive Likelihood Ratio; LRÂ â; Â Negative Likelihood Ratio; HIT; Heparin-Induced Thrombocytopenia; HIPA; Heparin-Induced Platelet Activation assay; HPF4; Heparin-Plat