Any ob-gynae will offer you any test that you require. CVS is still quite new here but Gleneagles & Mount Elizabeth definitely do it.
Someone will probably moan at me for saying this but most Singaporeans tend to err on the side of caution so a large number will go for amnio etc. even when the risk is not particularly high. This is partly due to the fact that the care for children with any kind of handicap is not as widely available as elsewhere & many families cannot afford it nor do they want to bring up a child that will never properly fit into Singapore society as it is.
Elective c-sections are also relatively common here.