Quite a busy place as its open till late and can get the results to your doctor within 24 hours.
Basically you go in with the blood test, ECG etc sheet from your doctor and present it to the reception with your health card and she gives you a ticket number but don't ask her anything as the respond will be I don't know. Then its a waiting game to get into a room, as there are about 5 rooms for blood test. Once in the room if you were the last person, then its a waiting game again! but its quick process and you are done from there on.