However, similar to the non-COVID-19 patient population, elevated D-dimer levels lack specificity (67% and 71%) in detecting COVID-19 associated VTE. 20, 23 Hence, it is currently not recommended to use D-dimer levels to diagnose COVID-19 associated VTE, 34 or decide which patients should undergo imaging to diagnose PE. 35 However, similar to non-COVID-19 patients, normal D-dimer values can effectively rule out VTE in the context of low pretest probability.