Your doctor will do examination of the involved limb to assess the condition.
Doppler/Duplex scans of the involved limb to identify the blood clots.
D-dimer levels
Treatment:
Blood thinners are generally used in treatment of DVT. Anticoagulants such as warfarin are generally used. It takes 3-5 days to act. During that time low molecular weight heparin is used and discontinued. Warfarin is continued. It is monitored by pt/inr test.
Newer anticoagulants such as rivoraxaban and Dabigatran can be used without briding time.
Cavalfilters :
Filters are placed in the venacava to trap the embolus from the DVT segment thus preventing pulmonary embolism.
Compression stockings:
Compression stockings can be worn preventing stasis of blood in the extremities and thus preventing deep vein thrombosis.