I arrived to the CAT scan prepared as instructed, which was relatively simple. I think I had to fast for minimum 3 hours, and then upon arrival to the facility, I had to drink 2 bottles of contrast fluid. They had 3 flavors, and I chose a berry flavor that tasted fine. I drank it, and then had to sit for 30 minutes. Then I got dressed in the gown went into the room and lied down in the machine. It did 3 passes, where I got instruction on how to breathe (breath in and hold) the first two times where really quick, but the 3rd time, I had to hold my breath for 30 to 40 seconds. I think the 3rd time was also done while injecting more contrast directly into my blood through an IV. After that back to the dressing room, and put on my cloth. I was a tiny bit dizzy from the contrast IV, but that was normal. I took a 15 minute break in the waiting room before driving home on my own.