D-dimer and coagulation function in blood routine can assist in determining the presence of thrombus, but thrombus cannot be diagnosed based on blood routine alone.
Thrombus is caused by the hypercoagulation mechanism in the blood while the anticoagulation mechanism is reduced. Therefore, blood tests such as platelet count, coagulation factors and D-dimer can be used to assist in the diagnosis of thrombosis.
Increased activity of coagulation factors can be seen in pre-thrombotic state or thrombotic disease, while the presence of disseminated intravascular coagulation (DIC) and other conditions will consume coagulation factors and platelets, resulting in the lowering of these two indexes; D-dimer can be excluded from the normal deep vein thrombosis, pulmonary embolism, etc., and increased can be seen in the formation of deep vein thrombosis, DIC, etc..
These indicators in blood routine cannot be used to diagnose thrombosis, and ultrasound, enhanced CT, angiography, etc. are generally needed to confirm the diagnosis of thrombosis. It is recommended that patients with suspected thrombosis should consult the doctor in time and follow the doctor’s instructions for examination and treatment.