I've never had to give a urine sample for any of my appointments.

At my 20 weeks scan they checked the organs like brain, heart, stomach... also looked at the spine to make sure something had closed over, checked that there are legs, arms, feet and hands... measured how long baby was and how big its head was and the circumference of its chest. I think there were a few other things but i cant remember now. My scan took about an hour and a quarter.