There are different protocols that are used for different types of patients. It is best you attend the Counselling sessions that are held by the IVF Centres to understand more about how they conduct their programs, as each fertility specialist has his/her own preferences.
I think many patients have different concerns and misinformation about what IVF entails. Some think its very painful, some think it is very time consuming and others are concerned about the cost of the procedure.
That is why in Singapore it is mandatory that potential patients undergo a counselling session where all these concerns are addressed.