An invasive procedure is one where purposeful/deliberate access to the body is gained via an incision, percutaneous puncture, where instrumentation is used in addition to the puncture needle, or instrumentation via a natural orifice.

Invasive Procedure : 

• Chorionic Villous Sampling
• Amniocentesis
• Fetal Reduction
• Fetal Blood Sampling / Transfusion (IUFT)
• Fetal Shunt
• Fetal Therapeutic treatment for complicated multiple 
• Pregnancy (LASER/RFA/Cord coagulation)
• Amnio Drainage
• Any other invasie procedure