as lisa said bp, some bloods, ecg heart trace only takes a few minutes, and a peak flow test for your lungs again only took about 10 mins, your weight , and then i had a appointment with the dietician who went over what pre op diet i was to do and they will go over your admission form ie health medicines you already take ps if you do take medication take it with you easier than trying to remember names and doses , and what time they want you to arrive for your op in all mines took about 2 hours waiting around waiting to see different people dont worry too much