Hi,
I think the procedure is almost the same at most public hospitals. I went for my first antenatal checkup at Tsan Yuk hosp at 11 weeks ( this was 2 weeks ago). You need to carry along your passport, HKID card, husband's HKID copy, a utility bill and a reference letter from a doctor. The procedure is easy once you get there but be sure to reach on time and you'll have to wait a while for them to attend to you. It's ok to eat something before the appt. as they will do routine blood tests and check weight and blood pressure. You'll also be given a form to fill out if you want to have the screening for downs syndrome done. I had the scan and blood tests for Downs screening done at Tsan Yuk during my first visit. I think the window for the screening begins at 11 weeks so be sure to let them know if you want to test for Downs.