You already know that Dubai is quite different from your home country. As an expatriate, you have to learn about the local specifics and modify your lifestyle to fit in the community. You have to arrange all aspects of your stay in the emirate from accommodation and transportation to personal finances. You should definitely learn all about healthcare in Dubai and your rights as a visa holder.
Before you get a Dubai resident visa, you will have to undergo a medical check. This is a routine procedure with standard tests such as the taking of a blood sample. The exam is performed so that the local authorities can be certain that you do not bring a contagious disease or a kind of a virus that is specific for your part of the world and can cause epidemic in Dubai.