MSFinals-6806
A 28-year-old man and his 26-year-old wife visit their GP for a follow-up appointment regarding their difficulty in conceiving. The couple has been trying to conceive for the past year without success. The wife has a regular menstrual cycle and no previous gynaecological issues. An ovulation test measuring her progesterone level showed normal ovulation. The GP advises the couple that the husband needs to undergo tests to determine if there is any cause on his side contributing to the infertility. Both the man and the woman have no history of sexually transmitted infections. The man has been smoking one to two cigarettes a day since he was 16 years old. What is the best next investigation for this patient?