In women infertility is caused by damaged fallopian tubes, hormone levels inconsistencies, cervical abnormalities/damage, and uterine damage. Infertility in men is caused by; Hormone problems, sperm production problems, blockage of sperm transport, and sexual problems. The cause of infertility can be determined by a series of tests. For women you can determine the cause of infertility though; ovulation testing, hysterosalpingography, ovarian reserve testing, other hormone testing, and laparoscopy. To determine infertility in men the following tests can be performed; general physical examination and medical history, semen analysis, scrotal ultrasound, hormone testing, post ejaculation urinalysis, genetic test, testicular biopsy, specialized function test, and trans rectal ultrasound. I will explain each these test and causes of infertility in further