We were not on any medications, and I took the intelligender test at 10 weeks. Followed the directions word for word. Within 3 minutes we got the result of a boy. Just found out today, at 20 weeks we are having a girl! I have read lots of forums that say it is common for the results to say boy, and be wrong! It was in our case, and after three boys, I couldn't be more thrilled! Save your money!!!!!