Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic. When an individual gets a semen analysis at most commercial labs, World Health Organization, non-strict criteria is used to determine normal morphology. Hwang K, et al. It's better to see your GP for a proper semen analysis at an accredited laboratory if you're concerned about your fertility. These well-established genetic causes of male infertility can be easily screened for in a blood test and can guide options for next steps, particularly in cases of azoospermia.
Sperm can have a multitude of defects in the head, neck or tail.
What Causes Thick Semen?
Mayo Clinic Health Letter. Learn more ways to improve your sperm health. If a genetically abnormal sperm is injected into an egg the resulting embryo is likely to be genetically abnormal and result in either no pregnancy or a very early miscarriage. A typical semen analysis also assesses:. It often starts off thick and warm, but becomes watery and cool after being exposed to the air for a few minutes. Some natural supplements and vitamins may be helpful for promoting normal sperm morphology too.