I had to do this for nursing school. This was about 5–6 years ago, but I just went to Doctor’s Care, they put the bubble of whatever it is under the skin on my forearm. I went back a week later, they looked at it, and then I went home. The second visit was free since I paid for the test in the first day, so I wouldn’t go to two different places (not sure why you would). As for prices, I’d use insurance if I had any. I didn’t when I was in nursing school and I remember it being quite pricey.