A patient of Varicose veins came to hospital; intern was on duty. Which test he shall perform to rule out the DVT?

Pehes test is used to differentiate between Varicose veins and Deep vein thrombosis. The limb is elevated and an elastic bandage is applied firmly from the toes to the upper 1/3 of the thigh to obliterate the superficial veins only. With the bandage applied the patient is asked to walk for 5 minutes. If deep system is competent, the blood will go through and back to the hea. If the deep system is incompetent, the patient will feel pain in the leg.