This will consist of:

• Detailed history
• Clinical examination
• Duplex ultrasound*
  
  *A machine uses sound waves to give pictures of the blood vessels and the direction blood is flowing.
  It allows the doctor to see exactly what is going on in the deep and surface veins and shows any blood flowing back down the veins in an abnormal way.
  Duplex scanning has replaced older tests for veins.
  It provides a detailed map of the veins and allows more accurate planning of treatment.
  A duplex scan takes about 30 minutes per leg.
  The procedure is painless and has no side effects.