The semen analysis is the most important test for male fertility. It examines semen volume, sperm count, motility, morphology, and other factors. Abnormal results may indicate infertility issues. Hormone tests of blood and urine examine reproductive hormone levels which are important for ovulation. Ultrasound can check the ovaries, uterus, and fallopian tubes for issues like endometriosis that impact fertility. Other tests include hysterosalpingography which uses dye and x-rays to examine the fallopian tubes for blockages. Together these tests provide information to diagnose and treat fertility problems.