There are several fertility tests for men that can help determine their reproductive health. Here are some common tests:
1.    Semen analysis: This is the most common test for male fertility. It involves analyzing a semen sample for the number, motility, and morphology (shape) of the sperm. A low sperm count, poor motility, or abnormal morphology can indicate male infertility.
2.    Hormone testing: Blood tests can be done to measure the levels of certain hormones, such as testosterone, follicle-stimulating hormone (FSH), and luteinizing hormone (LH). Abnormal hormone levels can affect sperm production and fertility.
3.    Testicular ultrasound: An ultrasound of the testicles can help detect abnormalities such as varicoceles (enlarged veins in the scrotum) or other conditions that may affect fertility.
4.    Genetic testing: Some genetic conditions can cause male infertility. Genetic testing can identify these conditions and help determine the risk of passing them on to offspring.
5.    Post-ejaculation urine analysis: This test involves analyzing a urine sample after ejaculation to check for the presence of retrograde ejaculation, a condition in which semen is ejaculated into the bladder instead of out through the penis.
6.    Testicular biopsy: In some cases, a testicular biopsy may be done to check for the presence of sperm in the testicles. This may be necessary if there is no sperm present in the semen or if a man has had a vasectomy and is considering a vasectomy reversal.
It's important to note that male fertility can be affected by a variety of factors, and a thorough evaluation by a fertility specialist is necessary to determine the cause of infertility and the most appropriate treatment options.