IPG and OIP waveforms recorded from a patient (RA32-M) with deep vein thrombosis in both the legs. Values of IPG parameters in this patient are as shown below: Very high values of CVS and M in both the legs in this patient strongly indicate deep vein thrombosis with secondary superficial venous incompetence bilaterally, though BFI (ele) at some locations is within normal limits. OIP observation in this patient are within normal limits and therefore the diagnosis is made only from IPG observations. Venogram in this patient (VR3167) has shown patchy opacification of deep veins, muscular veins of the calf in both the legs. Proximal portion of popliteal vein, superficial femoral vein and external iliac vein are inadequately opacified bilaterally. Secondary varicosity of great and short saphenous veins has been observed in both the legs. These findings confirm IPG diagnosis.