Dave on Instagram: "Welp. CT-A it is. An elevated D-dimer does not conclude the presence of a blood clot, it simply gives an indication on how active the blood clotting system is. So if the blood test result shows am elevated d-dimer, then a CT angiogram is needed to rule out if there is a blood clot in the lungs (pulmonary embolism). But that being said, an elevated D-Dimer can also very well have a negative CT-A for a PE. It’s simply an indicator of what to do next (even tho we want it to tell