A 58-year-old male is admitted to the ICU status-post succes…
A 58-year-old male is admitted to the ICU status-post successful percutaneous coronary intervention following an acute myocardial infarction. On admission his CBC showed a platelet count of 249,000 mcL. His hospital stay becomes complicated by atrial fibrillation and he ends up spending a total of 5 days inpatient. He is about to be discharged when his primary team notices his platelet count has dropped to 98,000 mcL. They calculate a 4T score to estimate the likelihood that he has developed heparin induced thrombocytopenia (HIT) as a result of heparin exposure during his cardiac catheterization. Which of the following is NOT one of the Ts in the 4T score?